220123021032 has 72 divisors (see below), whose sum is σ = 610353648450. Its totient is φ = 71667916992.

The previous prime is 220123021007. The next prime is 220123021033. The reversal of 220123021032 is 230120321022.

220123021032 is a `hidden beast` number, since 220 + 1 + 230 + 210 + 3 + 2 = 666.

220123021032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 212563414116 + 7559606916 = 461046^2 + 86946^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220123020996 and 220123021014.

It is not an unprimeable number, because it can be changed into a prime (220123021033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 693607 + ... + 959862.

Almost surely, 2^220123021032 is an apocalyptic number.

It is an amenable number.

220123021032 is an abundant number, since it is smaller than the sum of its proper divisors (390230627418).

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

220123021032 is a wasteful number, since it uses less digits than its factorization.

220123021032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653567 (or 1653517 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 220123021032 its reverse (230120321022), we get a palindrome (450243342054).

The spelling of 220123021032 in words is "two hundred twenty billion, one hundred twenty-three million, twenty-one thousand, thirty-two".