21216200062253 has 4 divisors (see below), whose sum is σ = 24247085785440. Its totient is φ = 18185314339068.

The previous prime is 21216200062247. The next prime is 21216200062319. The reversal of 21216200062253 is 35226000261212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21216200062253 - 2⁴² = 16818153551149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21216200062153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515442861583 + ... + 1515442861596.

It is an arithmetic number, because the mean of its divisors is an integer number (6061771446360).

Almost surely, 2^{21216200062253} is an apocalyptic number.

It is an amenable number.

21216200062253 is a deficient number, since it is larger than the sum of its proper divisors (3030885723187).

21216200062253 is an equidigital number, since it uses as much as digits as its factorization.

21216200062253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030885723186.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 21216200062253 in words is "twenty-one trillion, two hundred sixteen billion, two hundred million, sixty-two thousand, two hundred fifty-three".