210209953912237 has 2 divisors, whose sum is σ = 210209953912238. Its totient is φ = 210209953912236.

The previous prime is 210209953912171. The next prime is 210209953912241. The reversal of 210209953912237 is 732219359902012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195747913108036 + 14462040804201 = 13990994^2 + 3802899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210209953912237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210209953912837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105104976956118 + 105104976956119.

It is an arithmetic number, because the mean of its divisors is an integer number (105104976956119).

Almost surely, 2^{210209953912237} is an apocalyptic number.

It is an amenable number.

210209953912237 is a deficient number, since it is larger than the sum of its proper divisors (1).

210209953912237 is an equidigital number, since it uses as much as digits as its factorization.

210209953912237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 210209953912237 in words is "two hundred ten trillion, two hundred nine billion, nine hundred fifty-three million, nine hundred twelve thousand, two hundred thirty-seven".