23221112515320 has 128 divisors (see below), whose sum is σ = 69839367137280. Its totient is φ = 6176668608000.

The previous prime is 23221112515319. The next prime is 23221112515361. The reversal of 23221112515320 is 2351521112232.

It is a super-2 number, since 2×23221112515320² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 78458415 + ... + 78753825.

It is an arithmetic number, because the mean of its divisors is an integer number (545620055760).

Almost surely, 2^{23221112515320} is an apocalyptic number.

23221112515320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23221112515320 is an abundant number, since it is smaller than the sum of its proper divisors (46618254621960).

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

23221112515320 is a wasteful number, since it uses less digits than its factorization.

23221112515320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297077 (or 297073 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 23221112515320 its reverse (2351521112232), we get a palindrome (25572633627552).

The spelling of 23221112515320 in words is "twenty-three trillion, two hundred twenty-one billion, one hundred twelve million, five hundred fifteen thousand, three hundred twenty".