21112652107020 has 24 divisors (see below), whose sum is σ = 59115425899824. Its totient is φ = 5630040561856.

The previous prime is 21112652107007. The next prime is 21112652107067. The reversal of 21112652107020 is 2070125621112.

It is a happy number.

21112652107020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175938767499 + ... + 175938767618.

It is an arithmetic number, because the mean of its divisors is an integer number (2463142745826).

Almost surely, 2^{21112652107020} is an apocalyptic number.

21112652107020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112652107020 is an abundant number, since it is smaller than the sum of its proper divisors (38002773792804).

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

21112652107020 is a wasteful number, since it uses less digits than its factorization.

21112652107020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351877535129 (or 351877535127 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

Adding to 21112652107020 its reverse (2070125621112), we get a palindrome (23182777728132).

The spelling of 21112652107020 in words is "twenty-one trillion, one hundred twelve billion, six hundred fifty-two million, one hundred seven thousand, twenty".