220112112021 has 12 divisors (see below), whose sum is σ = 306797728608. Its totient is φ = 140361345784.

The previous prime is 220112112013. The next prime is 220112112023. The reversal of 220112112021 is 120211211022.

It is not a de Polignac number, because 220112112021 - 2³ = 220112112013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112112023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69346905 + ... + 69350078.

It is an arithmetic number, because the mean of its divisors is an integer number (25566477384).

Almost surely, 2^220112112021 is an apocalyptic number.

It is an amenable number.

220112112021 is a deficient number, since it is larger than the sum of its proper divisors (86685616587).

220112112021 is a wasteful number, since it uses less digits than its factorization.

220112112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138697032 (or 138697009 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220112112021 its reverse (120211211022), we get a palindrome (340323323043).

Subtracting from 220112112021 its reverse (120211211022), we obtain a palindrome (99900900999).

The spelling of 220112112021 in words is "two hundred twenty billion, one hundred twelve million, one hundred twelve thousand, twenty-one".