21113032300 has 72 divisors (see below), whose sum is σ = 46728946656. Its totient is φ = 8277135360.

The previous prime is 21113032273. The next prime is 21113032337. The reversal of 21113032300 is 323031112.

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, 7667724 + ... + 7670476.

It is an arithmetic number, because the mean of its divisors is an integer number (649013148).

Almost surely, 2^21113032300 is an apocalyptic number.

21113032300 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 21113032300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23364473328).

21113032300 is an abundant number, since it is smaller than the sum of its proper divisors (25615914356).

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

21113032300 is a wasteful number, since it uses less digits than its factorization.

21113032300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267 (or 4260 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21113032300 its reverse (323031112), we get a palindrome (21436063412).

The spelling of 21113032300 in words is "twenty-one billion, one hundred thirteen million, thirty-two thousand, three hundred".