21021301233200 has 60 divisors (see below), whose sum is σ = 50517588729888. Its totient is φ = 8406204153600.

The previous prime is 21021301233173. The next prime is 21021301233211. The reversal of 21021301233200 is 233210312012.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5784347 + ... + 8689146.

Almost surely, 2^{21021301233200} is an apocalyptic number.

21021301233200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21021301233200 is an abundant number, since it is smaller than the sum of its proper divisors (29496287496688).

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

21021301233200 is a wasteful number, since it uses less digits than its factorization.

21021301233200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14477142 (or 14477131 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21021301233200 its reverse (233210312012), we get a palindrome (21254511545212).

The spelling of 21021301233200 in words is "twenty-one trillion, twenty-one billion, three hundred one million, two hundred thirty-three thousand, two hundred".