21021300213292 has 12 divisors (see below), whose sum is σ = 38055802110480. Its totient is φ = 10148213896016.

The previous prime is 21021300213289. The next prime is 21021300213301. The reversal of 21021300213292 is 29231200312012.

It is a self number, because there is not a number n which added to its sum of digits gives 21021300213292.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90609052528 + ... + 90609052759.

It is an arithmetic number, because the mean of its divisors is an integer number (3171316842540).

Almost surely, 2^{21021300213292} is an apocalyptic number.

It is an amenable number.

21021300213292 is a deficient number, since it is larger than the sum of its proper divisors (17034501897188).

21021300213292 is a wasteful number, since it uses less digits than its factorization.

21021300213292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181218105320 (or 181218105318 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 21021300213292 in words is "twenty-one trillion, twenty-one billion, three hundred million, two hundred thirteen thousand, two hundred ninety-two".