1022111021957 has 2 divisors, whose sum is σ = 1022111021958. Its totient is φ = 1022111021956.

The previous prime is 1022111021933. The next prime is 1022111021999. The reversal of 1022111021957 is 7591201112201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 865701845761 + 156409176196 = 930431^2 + 395486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022111021957 - 2¹⁶ = 1022110956421 is a prime.

It is a super-2 number, since 2×1022111021957² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022111021557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511055510978 + 511055510979.

It is an arithmetic number, because the mean of its divisors is an integer number (511055510979).

Almost surely, 2^{1022111021957} is an apocalyptic number.

It is an amenable number.

1022111021957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022111021957 is an equidigital number, since it uses as much as digits as its factorization.

1022111021957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 32.

The spelling of 1022111021957 in words is "one trillion, twenty-two billion, one hundred eleven million, twenty-one thousand, nine hundred fifty-seven".