22011111010957 has 2 divisors, whose sum is σ = 22011111010958. Its totient is φ = 22011111010956.

The previous prime is 22011111010943. The next prime is 22011111011003. The reversal of 22011111010957 is 75901011111022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19283919691716 + 2727191319241 = 4391346^2 + 1651421^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011111010957 - 2¹⁹ = 22011110486669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011111010907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005555505478 + 11005555505479.

It is an arithmetic number, because the mean of its divisors is an integer number (11005555505479).

Almost surely, 2^{22011111010957} is an apocalyptic number.

It is an amenable number.

22011111010957 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011111010957 is an equidigital number, since it uses as much as digits as its factorization.

22011111010957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 31.

Adding to 22011111010957 its reverse (75901011111022), we get a palindrome (97912122121979).

The spelling of 22011111010957 in words is "twenty-two trillion, eleven billion, one hundred eleven million, ten thousand, nine hundred fifty-seven".