1001222747 has 16 divisors (see below), whose sum is σ = 1174122432. Its totient is φ = 835860480.

The previous prime is 1001222737. The next prime is 1001222801. The reversal of 1001222747 is 7472221001.

It is not a de Polignac number, because 1001222747 - 2⁴ = 1001222731 is a prime.

It is a super-2 number, since 2×1001222747² = 2004893978220452018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001222737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191723 + ... + 196875.

It is an arithmetic number, because the mean of its divisors is an integer number (73382652).

Almost surely, 2^1001222747 is an apocalyptic number.

1001222747 is a deficient number, since it is larger than the sum of its proper divisors (172899685).

1001222747 is an equidigital number, since it uses as much as digits as its factorization.

1001222747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 1001222747 is about 31642.1040229628. The cubic root of 1001222747 is about 1000.4074163227.

Adding to 1001222747 its reverse (7472221001), we get a palindrome (8473443748).

The spelling of 1001222747 in words is "one billion, one million, two hundred twenty-two thousand, seven hundred forty-seven".