211002200009957 has 2 divisors, whose sum is σ = 211002200009958. Its totient is φ = 211002200009956.

The previous prime is 211002200009921. The next prime is 211002200010071. The reversal of 211002200009957 is 759900002200112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131692470838756 + 79309729171201 = 11475734^2 + 8905601^2 .

It is a cyclic number.

It is not a de Polignac number, because 211002200009957 - 2²⁸ = 211001931574501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211002200009957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211002200003957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105501100004978 + 105501100004979.

It is an arithmetic number, because the mean of its divisors is an integer number (105501100004979).

Almost surely, 2^{211002200009957} is an apocalyptic number.

It is an amenable number.

211002200009957 is a deficient number, since it is larger than the sum of its proper divisors (1).

211002200009957 is an equidigital number, since it uses as much as digits as its factorization.

211002200009957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 211002200009957 in words is "two hundred eleven trillion, two billion, two hundred million, nine thousand, nine hundred fifty-seven".