210021002200957 has 2 divisors, whose sum is σ = 210021002200958. Its totient is φ = 210021002200956.

The previous prime is 210021002200943. The next prime is 210021002200967. The reversal of 210021002200957 is 759002200120012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139626032791716 + 70394969409241 = 11816346^2 + 8390171^2 .

It is a cyclic number.

It is not a de Polignac number, because 210021002200957 - 2⁷ = 210021002200829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210021002200937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010501100478 + 105010501100479.

It is an arithmetic number, because the mean of its divisors is an integer number (105010501100479).

Almost surely, 2^{210021002200957} is an apocalyptic number.

It is an amenable number.

210021002200957 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021002200957 is an equidigital number, since it uses as much as digits as its factorization.

210021002200957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 210021002200957 its reverse (759002200120012), we get a palindrome (969023202320969).

The spelling of 210021002200957 in words is "two hundred ten trillion, twenty-one billion, two million, two hundred thousand, nine hundred fifty-seven".