21885920118213 has 16 divisors (see below), whose sum is σ = 29195635699200. Its totient is φ = 14583409449840.

The previous prime is 21885920118199. The next prime is 21885920118269. The reversal of 21885920118213 is 31281102958812.

It is not a de Polignac number, because 21885920118213 - 2⁶ = 21885920118149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21885920118613) 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, 334210608 + ... + 334276086.

It is an arithmetic number, because the mean of its divisors is an integer number (1824727231200).

Almost surely, 2^{21885920118213} is an apocalyptic number.

It is an amenable number.

21885920118213 is a deficient number, since it is larger than the sum of its proper divisors (7309715580987).

21885920118213 is a wasteful number, since it uses less digits than its factorization.

21885920118213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118792.

The product of its (nonzero) digits is 552960, while the sum is 51.

The spelling of 21885920118213 in words is "twenty-one trillion, eight hundred eighty-five billion, nine hundred twenty million, one hundred eighteen thousand, two hundred thirteen".