21403313200 has 60 divisors (see below), whose sum is σ = 51450633040. Its totient is φ = 8556468480.

The previous prime is 21403313179. The next prime is 21403313203. The reversal of 21403313200 is 231330412.

It is not an unprimeable number, because it can be changed into a prime (21403313203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 737362 + ... + 765838.

Almost surely, 2^21403313200 is an apocalyptic number.

21403313200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21403313200 is an abundant number, since it is smaller than the sum of its proper divisors (30047319840).

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

21403313200 is a wasteful number, since it uses less digits than its factorization.

21403313200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30374 (or 30363 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21403313200 its reverse (231330412), we get a palindrome (21634643612).

The spelling of 21403313200 in words is "twenty-one billion, four hundred three million, three hundred thirteen thousand, two hundred".