21202232112330 has 64 divisors (see below), whose sum is σ = 50999279063040. Its totient is φ = 5641272495936.

The previous prime is 21202232112311. The next prime is 21202232112337. The reversal of 21202232112330 is 3321123220212.

It is a self number, because there is not a number n which added to its sum of digits gives 21202232112330.

It is not an unprimeable number, because it can be changed into a prime (21202232112337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200226979 + ... + 200332841.

It is an arithmetic number, because the mean of its divisors is an integer number (796863735360).

Almost surely, 2^{21202232112330} is an apocalyptic number.

21202232112330 is an abundant number, since it is smaller than the sum of its proper divisors (29797046950710).

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

21202232112330 is a wasteful number, since it uses less digits than its factorization.

21202232112330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120755.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21202232112330 its reverse (3321123220212), we get a palindrome (24523355332542).

The spelling of 21202232112330 in words is "twenty-one trillion, two hundred two billion, two hundred thirty-two million, one hundred twelve thousand, three hundred thirty".