21202112130 has 32 divisors (see below), whose sum is σ = 50907619584. Its totient is φ = 5651390976.

The previous prime is 21202112101. The next prime is 21202112153. The reversal of 21202112130 is 3121120212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87274 + ... + 223653.

It is an arithmetic number, because the mean of its divisors is an integer number (1590863112).

Almost surely, 2^21202112130 is an apocalyptic number.

21202112130 is an abundant number, since it is smaller than the sum of its proper divisors (29705507454).

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

21202112130 is a wasteful number, since it uses less digits than its factorization.

21202112130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313210.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21202112130 its reverse (3121120212), we get a palindrome (24323232342).

The spelling of 21202112130 in words is "twenty-one billion, two hundred two million, one hundred twelve thousand, one hundred thirty".