21233013031200 has 144 divisors (see below), whose sum is σ = 70284872417760. Its totient is φ = 5566168350720.

The previous prime is 21233013031199. The next prime is 21233013031207. The reversal of 21233013031200 is 213031033212.

It is not an unprimeable number, because it can be changed into a prime (21233013031207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74833729 + ... + 75116928.

It is an arithmetic number, because the mean of its divisors is an integer number (488089391790).

Almost surely, 2^{21233013031200} is an apocalyptic number.

21233013031200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233013031200 is an abundant number, since it is smaller than the sum of its proper divisors (49051859386560).

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

21233013031200 is a wasteful number, since it uses less digits than its factorization.

21233013031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149950739 (or 149950726 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21233013031200 its reverse (213031033212), we get a palindrome (21446044064412).

The spelling of 21233013031200 in words is "twenty-one trillion, two hundred thirty-three billion, thirteen million, thirty-one thousand, two hundred".