21216224060053 has 16 divisors (see below), whose sum is σ = 23611509616320. Its totient is φ = 18900757331200.

The previous prime is 21216224060047. The next prime is 21216224060093. The reversal of 21216224060053 is 35006042261212.

It is a cyclic number.

It is not a de Polignac number, because 21216224060053 - 2⁵ = 21216224060021 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 (21216224060023) 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, 51356788 + ... + 51768253.

It is an arithmetic number, because the mean of its divisors is an integer number (1475719351020).

Almost surely, 2^{21216224060053} is an apocalyptic number.

It is an amenable number.

21216224060053 is a deficient number, since it is larger than the sum of its proper divisors (2395285556267).

21216224060053 is a wasteful number, since it uses less digits than its factorization.

21216224060053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103125428.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 21216224060053 in words is "twenty-one trillion, two hundred sixteen billion, two hundred twenty-four million, sixty thousand, fifty-three".