210952994257 has 2 divisors, whose sum is σ = 210952994258. Its totient is φ = 210952994256.

The previous prime is 210952994209. The next prime is 210952994297. The reversal of 210952994257 is 752499259012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118044467776 + 92908526481 = 343576^2 + 304809^2 .

It is a cyclic number.

It is not a de Polignac number, because 210952994257 - 2²⁷ = 210818776529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210952994198 and 210952994207.

It is not a weakly prime, because it can be changed into another prime (210952994297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105476497128 + 105476497129.

It is an arithmetic number, because the mean of its divisors is an integer number (105476497129).

Almost surely, 2^210952994257 is an apocalyptic number.

It is an amenable number.

210952994257 is a deficient number, since it is larger than the sum of its proper divisors (1).

210952994257 is an equidigital number, since it uses as much as digits as its factorization.

210952994257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 210952994257 in words is "two hundred ten billion, nine hundred fifty-two million, nine hundred ninety-four thousand, two hundred fifty-seven".