21151111241088 has 48 divisors (see below), whose sum is σ = 60864525840300. Its totient is φ = 7050370413312.

The previous prime is 21151111241059. The next prime is 21151111241101. The reversal of 21151111241088 is 88014211115112.

21151111241088 is a `hidden beast` number, since 2 + 1 + 1 + 51 + 1 + 112 + 410 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×21151111241088³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9180168658 + ... + 9180170961.

Almost surely, 2^{21151111241088} is an apocalyptic number.

It is an amenable number.

21151111241088 is an abundant number, since it is smaller than the sum of its proper divisors (39713414599212).

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

21151111241088 is a wasteful number, since it uses less digits than its factorization.

21151111241088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18360339639 (or 18360339624 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 36.

The spelling of 21151111241088 in words is "twenty-one trillion, one hundred fifty-one billion, one hundred eleven million, two hundred forty-one thousand, eighty-eight".