21130424202 has 32 divisors (see below), whose sum is σ = 44412426432. Its totient is φ = 6693732864.

The previous prime is 21130424131. The next prime is 21130424209. The reversal of 21130424202 is 20242403112.

It is not an unprimeable number, because it can be changed into a prime (21130424209) 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, 1097223 + ... + 1116314.

It is an arithmetic number, because the mean of its divisors is an integer number (1387888326).

Almost surely, 2^21130424202 is an apocalyptic number.

21130424202 is an abundant number, since it is smaller than the sum of its proper divisors (23282002230).

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

21130424202 is a wasteful number, since it uses less digits than its factorization.

21130424202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213622.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21130424202 its reverse (20242403112), we get a palindrome (41372827314).

The spelling of 21130424202 in words is "twenty-one billion, one hundred thirty million, four hundred twenty-four thousand, two hundred two".