21300342232 has 48 divisors (see below), whose sum is σ = 43732791000. Its totient is φ = 9720412416.

The previous prime is 21300342223. The next prime is 21300342277. The reversal of 21300342232 is 23224300312.

It is a congruent number.

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, 31819 + ... + 208837.

Almost surely, 2^21300342232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21300342232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21866395500).

21300342232 is an abundant number, since it is smaller than the sum of its proper divisors (22432448768).

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

21300342232 is a wasteful number, since it uses less digits than its factorization.

21300342232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177140 (or 177123 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21300342232 its reverse (23224300312), we get a palindrome (44524642544).

The spelling of 21300342232 in words is "twenty-one billion, three hundred million, three hundred forty-two thousand, two hundred thirty-two".