21222233132 has 24 divisors (see below), whose sum is σ = 37670844960. Its totient is φ = 10459205120.

The previous prime is 21222233117. The next prime is 21222233189. The reversal of 21222233132 is 23133222212.

It is a junction number, because it is equal to n+sod(n) for n = 21222233098 and 21222233107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047868 + ... + 2058204.

It is an arithmetic number, because the mean of its divisors is an integer number (1569618540).

Almost surely, 2^21222233132 is an apocalyptic number.

It is an amenable number.

21222233132 is a deficient number, since it is larger than the sum of its proper divisors (16448611828).

21222233132 is a wasteful number, since it uses less digits than its factorization.

21222233132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17641 (or 17639 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

Adding to 21222233132 its reverse (23133222212), we get a palindrome (44355455344).

The spelling of 21222233132 in words is "twenty-one billion, two hundred twenty-two million, two hundred thirty-three thousand, one hundred thirty-two".