213010021020169 has 2 divisors, whose sum is σ = 213010021020170. Its totient is φ = 213010021020168.

The previous prime is 213010021020113. The next prime is 213010021020239. The reversal of 213010021020169 is 961020120010312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181823514798025 + 31186506222144 = 13484195^2 + 5584488^2 .

It is a cyclic number.

It is not a de Polignac number, because 213010021020169 - 2⁹ = 213010021019657 is a prime.

It is a super-2 number, since 2×213010021020169² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213010021320169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106505010510084 + 106505010510085.

It is an arithmetic number, because the mean of its divisors is an integer number (106505010510085).

Almost surely, 2^{213010021020169} is an apocalyptic number.

It is an amenable number.

213010021020169 is a deficient number, since it is larger than the sum of its proper divisors (1).

213010021020169 is an equidigital number, since it uses as much as digits as its factorization.

213010021020169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 213010021020169 in words is "two hundred thirteen trillion, ten billion, twenty-one million, twenty thousand, one hundred sixty-nine".