213264221615999 has 16 divisors (see below), whose sum is σ = 214778193315840. Its totient is φ = 211755694400640.

The previous prime is 213264221615983. The next prime is 213264221616011. The reversal of 213264221615999 is 999516122462312.

It is a cyclic number.

It is not a de Polignac number, because 213264221615999 - 2⁴ = 213264221615983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213264221615959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420665942 + ... + 421172604.

It is an arithmetic number, because the mean of its divisors is an integer number (13423637082240).

Almost surely, 2^{213264221615999} is an apocalyptic number.

213264221615999 is a deficient number, since it is larger than the sum of its proper divisors (1513971699841).

213264221615999 is a wasteful number, since it uses less digits than its factorization.

213264221615999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512030.

The product of its digits is 25194240, while the sum is 62.

The spelling of 213264221615999 in words is "two hundred thirteen trillion, two hundred sixty-four billion, two hundred twenty-one million, six hundred fifteen thousand, nine hundred ninety-nine".