21110112203130 has 96 divisors (see below), whose sum is σ = 55064206124928. Its totient is φ = 5611118716800.

The previous prime is 21110112203111. The next prime is 21110112203179. The reversal of 21110112203130 is 3130221101112.

21110112203130 is a `hidden beast` number, since 21 + 110 + 1 + 1 + 220 + 313 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 430521715 + ... + 430570745.

It is an arithmetic number, because the mean of its divisors is an integer number (573585480468).

Almost surely, 2^{21110112203130} is an apocalyptic number.

21110112203130 is an abundant number, since it is smaller than the sum of its proper divisors (33954093921798).

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

21110112203130 is a wasteful number, since it uses less digits than its factorization.

21110112203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64452 (or 64449 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21110112203130 its reverse (3130221101112), we get a palindrome (24240333304242).

The spelling of 21110112203130 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve million, two hundred three thousand, one hundred thirty".