21231130233200 has 60 divisors (see below), whose sum is σ = 51140970363648. Its totient is φ = 8470278528000.

The previous prime is 21231130233169. The next prime is 21231130233217. The reversal of 21231130233200 is 233203113212.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 69139001 + ... + 69445400.

Almost surely, 2^{21231130233200} is an apocalyptic number.

21231130233200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21231130233200 is an abundant number, since it is smaller than the sum of its proper divisors (29909840130448).

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

21231130233200 is a wasteful number, since it uses less digits than its factorization.

21231130233200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138584802 (or 138584791 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21231130233200 its reverse (233203113212), we get a palindrome (21464333346412).

The spelling of 21231130233200 in words is "twenty-one trillion, two hundred thirty-one billion, one hundred thirty million, two hundred thirty-three thousand, two hundred".