21233131032200 has 96 divisors (see below), whose sum is σ = 49761179013000. Its totient is φ = 8425671321600.

The previous prime is 21233131032193. The next prime is 21233131032299. The reversal of 21233131032200 is 223013133212.

It can be written as a sum of positive squares in 12 ways, for example, as 4562846310724 + 16670284721476 = 2136082^2 + 4082926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14088746 + ... + 15522854.

Almost surely, 2^{21233131032200} is an apocalyptic number.

21233131032200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21233131032200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24880589506500).

21233131032200 is an abundant number, since it is smaller than the sum of its proper divisors (28528047980800).

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

21233131032200 is a wasteful number, since it uses less digits than its factorization.

21233131032200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434715 (or 1434706 counting only the distinct ones).

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

Adding to 21233131032200 its reverse (223013133212), we get a palindrome (21456144165412).

It can be divided in two parts, 2123313 and 1032200, that added together give a palindrome (3155513).

The spelling of 21233131032200 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred thirty-one million, thirty-two thousand, two hundred".