21120223332 has 48 divisors (see below), whose sum is σ = 53086324032. Its totient is φ = 6496694400.

The previous prime is 21120223307. The next prime is 21120223351. The reversal of 21120223332 is 23332202112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21120223299 and 21120223308.

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, 598582 + ... + 632882.

It is an arithmetic number, because the mean of its divisors is an integer number (1105965084).

Almost surely, 2^21120223332 is an apocalyptic number.

It is an amenable number.

21120223332 is an abundant number, since it is smaller than the sum of its proper divisors (31966100700).

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

21120223332 is a wasteful number, since it uses less digits than its factorization.

21120223332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38268 (or 38266 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21120223332 its reverse (23332202112), we get a palindrome (44452425444).

The spelling of 21120223332 in words is "twenty-one billion, one hundred twenty million, two hundred twenty-three thousand, three hundred thirty-two".