21332222120 has 64 divisors (see below), whose sum is σ = 52879443840. Its totient is φ = 7680352000.

The previous prime is 21332222117. The next prime is 21332222209. The reversal of 21332222120 is 2122223312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21332222092 and 21332222101.

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, 195572 + ... + 284451.

It is an arithmetic number, because the mean of its divisors is an integer number (826241310).

Almost surely, 2^21332222120 is an apocalyptic number.

21332222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332222120 is an abundant number, since it is smaller than the sum of its proper divisors (31547221720).

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

21332222120 is a wasteful number, since it uses less digits than its factorization.

21332222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480146 (or 480142 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21332222120 its reverse (2122223312), we get a palindrome (23454445432).

The spelling of 21332222120 in words is "twenty-one billion, three hundred thirty-two million, two hundred twenty-two thousand, one hundred twenty".