22031233157 has 2 divisors, whose sum is σ = 22031233158. Its totient is φ = 22031233156.

The previous prime is 22031233111. The next prime is 22031233201. The reversal of 22031233157 is 75133213022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21494198881 + 537034276 = 146609^2 + 23174^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031233157 - 2⁶ = 22031233093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22031233957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015616578 + 11015616579.

It is an arithmetic number, because the mean of its divisors is an integer number (11015616579).

Almost surely, 2^22031233157 is an apocalyptic number.

It is an amenable number.

22031233157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031233157 is an equidigital number, since it uses as much as digits as its factorization.

22031233157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

Adding to 22031233157 its reverse (75133213022), we get a palindrome (97164446179).

The spelling of 22031233157 in words is "twenty-two billion, thirty-one million, two hundred thirty-three thousand, one hundred fifty-seven".