220112102210221 has 16 divisors (see below), whose sum is σ = 238264312826736. Its totient is φ = 202136908824576.

The previous prime is 220112102210213. The next prime is 220112102210243. The reversal of 220112102210221 is 122012201211022.

It can be written as a sum of positive squares in 8 ways, for example, as 9031593678121 + 211080508532100 = 3005261^2 + 14528610^2 .

It is a cyclic number.

It is not a de Polignac number, because 220112102210221 - 2³ = 220112102210213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112102210251) 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, 53399980 + ... + 57374053.

It is an arithmetic number, because the mean of its divisors is an integer number (14891519551671).

Almost surely, 2^{220112102210221} is an apocalyptic number.

It is an amenable number.

220112102210221 is a deficient number, since it is larger than the sum of its proper divisors (18152210616515).

220112102210221 is a wasteful number, since it uses less digits than its factorization.

220112102210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110774832.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220112102210221 its reverse (122012201211022), we get a palindrome (342124303421243).

The spelling of 220112102210221 in words is "two hundred twenty trillion, one hundred twelve billion, one hundred two million, two hundred ten thousand, two hundred twenty-one".