21224202032 has 20 divisors (see below), whose sum is σ = 44860245576. Its totient is φ = 9647364480.

The previous prime is 21224202011. The next prime is 21224202091. The reversal of 21224202032 is 23020242212.

It is a junction number, because it is equal to n+sod(n) for n = 21224201995 and 21224202013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60295853 + ... + 60296204.

Almost surely, 2^21224202032 is an apocalyptic number.

21224202032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21224202032 is an abundant number, since it is smaller than the sum of its proper divisors (23636043544).

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

21224202032 is a wasteful number, since it uses less digits than its factorization.

21224202032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120592076 (or 120592070 counting only the distinct ones).

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

Adding to 21224202032 its reverse (23020242212), we get a palindrome (44244444244).

The spelling of 21224202032 in words is "twenty-one billion, two hundred twenty-four million, two hundred two thousand, thirty-two".