22212020999957 has 2 divisors, whose sum is σ = 22212020999958. Its totient is φ = 22212020999956.

The previous prime is 22212020999933. The next prime is 22212020999999. The reversal of 22212020999957 is 75999902021222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18578780916721 + 3633240083236 = 4310311^2 + 1906106^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212020999957 - 2¹⁰ = 22212020998933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22212020999896 and 22212020999905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22212020993957) 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, 11106010499978 + 11106010499979.

It is an arithmetic number, because the mean of its divisors is an integer number (11106010499979).

Almost surely, 2^{22212020999957} is an apocalyptic number.

It is an amenable number.

22212020999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212020999957 is an equidigital number, since it uses as much as digits as its factorization.

22212020999957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 22212020999957 in words is "twenty-two trillion, two hundred twelve billion, twenty million, nine hundred ninety-nine thousand, nine hundred fifty-seven".