220112120102221 has 4 divisors (see below), whose sum is σ = 222585289991100. Its totient is φ = 217638950213344.

The previous prime is 220112120102219. The next prime is 220112120102239. The reversal of 220112120102221 is 122201021211022.

220112120102221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54526335798025 + 165585784304196 = 7384195^2 + 12868014^2 .

It is a cyclic number.

It is not a de Polignac number, because 220112120102221 - 2¹ = 220112120102219 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 (220112120102201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236584944306 + ... + 1236584944483.

It is an arithmetic number, because the mean of its divisors is an integer number (55646322497775).

Almost surely, 2^{220112120102221} is an apocalyptic number.

It is an amenable number.

220112120102221 is a deficient number, since it is larger than the sum of its proper divisors (2473169888879).

220112120102221 is an equidigital number, since it uses as much as digits as its factorization.

220112120102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473169888878.

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

Adding to 220112120102221 its reverse (122201021211022), we get a palindrome (342313141313243).

The spelling of 220112120102221 in words is "two hundred twenty trillion, one hundred twelve billion, one hundred twenty million, one hundred two thousand, two hundred twenty-one".