220323220128 has 96 divisors (see below), whose sum is σ = 701028457920. Its totient is φ = 66764609280.

The previous prime is 220323220099. The next prime is 220323220129. The reversal of 220323220128 is 821022323022.

220323220128 is a `hidden beast` number, since 2 + 203 + 232 + 201 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×220323220128² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (220323220129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11581575 + ... + 11600582.

It is an arithmetic number, because the mean of its divisors is an integer number (7302379770).

Almost surely, 2^220323220128 is an apocalyptic number.

It is an amenable number.

220323220128 is an abundant number, since it is smaller than the sum of its proper divisors (480705237792).

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

220323220128 is a wasteful number, since it uses less digits than its factorization.

220323220128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23182187 (or 23182173 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 220323220128 in words is "two hundred twenty billion, three hundred twenty-three million, two hundred twenty thousand, one hundred twenty-eight".