21122321333232 has 80 divisors (see below), whose sum is σ = 62557862326272. Its totient is φ = 6015911228160.

The previous prime is 21122321333177. The next prime is 21122321333249. The reversal of 21122321333232 is 23233312322112.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 21122321333232.

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, 99048144 + ... + 99261167.

Almost surely, 2^{21122321333232} is an apocalyptic number.

It is an amenable number.

21122321333232 is an abundant number, since it is smaller than the sum of its proper divisors (41435540993040).

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

21122321333232 is a wasteful number, since it uses less digits than its factorization.

21122321333232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198309646 (or 198309640 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

Adding to 21122321333232 its reverse (23233312322112), we get a palindrome (44355633655344).

The spelling of 21122321333232 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred twenty-one million, three hundred thirty-three thousand, two hundred thirty-two".