22011111019957 has 2 divisors, whose sum is σ = 22011111019958. Its totient is φ = 22011111019956.

The previous prime is 22011111019949. The next prime is 22011111020029. The reversal of 22011111019957 is 75991011111022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22010275463121 + 835556836 = 4691511^2 + 28906^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011111019957 - 2³ = 22011111019949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011111019907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005555509978 + 11005555509979.

It is an arithmetic number, because the mean of its divisors is an integer number (11005555509979).

Almost surely, 2^{22011111019957} is an apocalyptic number.

It is an amenable number.

22011111019957 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011111019957 is an equidigital number, since it uses as much as digits as its factorization.

22011111019957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 40.

The spelling of 22011111019957 in words is "twenty-two trillion, eleven billion, one hundred eleven million, nineteen thousand, nine hundred fifty-seven".