21024202232 has 64 divisors (see below), whose sum is σ = 44504294400. Its totient is φ = 9224640000.

The previous prime is 21024202229. The next prime is 21024202253. The reversal of 21024202232 is 23220242012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084319 + ... + 1103537.

It is an arithmetic number, because the mean of its divisors is an integer number (695379600).

Almost surely, 2^21024202232 is an apocalyptic number.

21024202232 is a gapful number since it is divisible by the number (22) 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 21024202232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22252147200).

21024202232 is an abundant number, since it is smaller than the sum of its proper divisors (23480092168).

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

21024202232 is a wasteful number, since it uses less digits than its factorization.

21024202232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19668 (or 19664 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21024202232 its reverse (23220242012), we get a palindrome (44244444244).

The spelling of 21024202232 in words is "twenty-one billion, twenty-four million, two hundred two thousand, two hundred thirty-two".