21122032232320 has 64 divisors (see below), whose sum is σ = 50533792333200. Its totient is φ = 8442298441728.

The previous prime is 21122032232317. The next prime is 21122032232387. The reversal of 21122032232320 is 2323223022112.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×21122032232320² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11892810 + ... + 13552969.

Almost surely, 2^{21122032232320} is an apocalyptic number.

21122032232320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122032232320 is an abundant number, since it is smaller than the sum of its proper divisors (29411760100880).

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

21122032232320 is a wasteful number, since it uses less digits than its factorization.

21122032232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25447095 (or 25447083 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21122032232320 its reverse (2323223022112), we get a palindrome (23445255254432).

The spelling of 21122032232320 in words is "twenty-one trillion, one hundred twenty-two billion, thirty-two million, two hundred thirty-two thousand, three hundred twenty".