9921022331 has 16 divisors (see below), whose sum is σ = 11301189120. Its totient is φ = 8621099520.

The previous prime is 9921022313. The next prime is 9921022337. The reversal of 9921022331 is 1332201299.

It is a de Polignac number, because none of the positive numbers 2^k-9921022331 is a prime.

It is a super-2 number, since 2×9921022331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9921022337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381851 + ... + 407003.

It is an arithmetic number, because the mean of its divisors is an integer number (706324320).

Almost surely, 2^9921022331 is an apocalyptic number.

9921022331 is a deficient number, since it is larger than the sum of its proper divisors (1380166789).

9921022331 is a wasteful number, since it uses less digits than its factorization.

9921022331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26746.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 9921022331 is about 99604.3288768114. The cubic root of 9921022331 is about 2148.7479518142.

The spelling of 9921022331 in words is "nine billion, nine hundred twenty-one million, twenty-two thousand, three hundred thirty-one".