21113511402160 has 80 divisors (see below), whose sum is σ = 49156657674336. Its totient is φ = 8433752131584.

The previous prime is 21113511402107. The next prime is 21113511402169. The reversal of 21113511402160 is 6120411531112.

It is a happy number.

21113511402160 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (21113511402169) 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, 1134089172 + ... + 1134107788.

Almost surely, 2^{21113511402160} is an apocalyptic number.

21113511402160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113511402160 is an abundant number, since it is smaller than the sum of its proper divisors (28043146272176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21113511402160 is a wasteful number, since it uses less digits than its factorization.

21113511402160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37430 (or 37424 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 21113511402160 its reverse (6120411531112), we get a palindrome (27233922933272).

The spelling of 21113511402160 in words is "twenty-one trillion, one hundred thirteen billion, five hundred eleven million, four hundred two thousand, one hundred sixty".