220021112122 has 12 divisors (see below), whose sum is σ = 383914389690. Its totient is φ = 94294762296.

The previous prime is 220021112111. The next prime is 220021112131. The reversal of 220021112122 is 221211120022.

It is a happy number.

220021112122 is digitally balanced in base 3, 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., 200622472281 + 19398639841 = 447909^2 + 139279^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220021112096 and 220021112105.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122556597 + ... + 1122556792.

Almost surely, 2^220021112122 is an apocalyptic number.

220021112122 is a deficient number, since it is larger than the sum of its proper divisors (163893277568).

220021112122 is a wasteful number, since it uses less digits than its factorization.

220021112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245113405 (or 2245113398 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220021112122 its reverse (221211120022), we get a palindrome (441232232144).

The spelling of 220021112122 in words is "two hundred twenty billion, twenty-one million, one hundred twelve thousand, one hundred twenty-two".