211012099957 has 2 divisors, whose sum is σ = 211012099958. Its totient is φ = 211012099956.

The previous prime is 211012099937. The next prime is 211012099979. The reversal of 211012099957 is 759990210112.

211012099957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160761704401 + 50250395556 = 400951^2 + 224166^2 .

It is a cyclic number.

It is not a de Polignac number, because 211012099957 - 2³¹ = 208864616309 is a prime.

It is a super-2 number, since 2×211012099957² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211012099927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105506049978 + 105506049979.

It is an arithmetic number, because the mean of its divisors is an integer number (105506049979).

Almost surely, 2^211012099957 is an apocalyptic number.

It is an amenable number.

211012099957 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012099957 is an equidigital number, since it uses as much as digits as its factorization.

211012099957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 46.

The spelling of 211012099957 in words is "two hundred eleven billion, twelve million, ninety-nine thousand, nine hundred fifty-seven".