22331322997 has 2 divisors, whose sum is σ = 22331322998. Its totient is φ = 22331322996.

The previous prime is 22331322977. The next prime is 22331323019. The reversal of 22331322997 is 79922313322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21973318756 + 358004241 = 148234^2 + 18921^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331322997 - 2³¹ = 20183839349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22331322947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11165661498 + 11165661499.

It is an arithmetic number, because the mean of its divisors is an integer number (11165661499).

Almost surely, 2^22331322997 is an apocalyptic number.

It is an amenable number.

22331322997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22331322997 is an equidigital number, since it uses as much as digits as its factorization.

22331322997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 43.

The spelling of 22331322997 in words is "twenty-two billion, three hundred thirty-one million, three hundred twenty-two thousand, nine hundred ninety-seven".