According to the Qur'an:

Beautifully, these verses explain what the name means.

• [He is] Knower of the unseen, and He does not disclose His [knowledge of the] unseen to anyone Except whom He has approved of messengers, and indeed, He sends before each messenger and behind him observers (Quran 72:26-27)
• He is the First and the Last, the Ascendant and the Intimate, and He is, of all things, Knowing. (Quran 57:3)

Keep reading, there is Wazifa in the following context.

Wird O Wazifa:

The Wid and Wazifa are the best tools to use in times of hardship and worry. They can bring happiness and can also turn the weather of your life into prosperous and enjoyable. If you are concerned with the working of this Wazifa kindly read the name of in silence and feel like you are meditating alone.

Using his beautiful name can benefit you in the following ways.

To Know Secrets:

Several situations call for our brains to not work. All we need is to make our brains active enough to have precise information. This name will aid you in thinking broadly and storing more data than what is in a normal brain. Read it 100 times after you pray. You will receive the real facts about anything you endeavor to learn.