220112200001221 has 16 divisors (see below), whose sum is σ = 250788440200320. Its totient is φ = 191229323158720.

The previous prime is 220112200001167. The next prime is 220112200001231. The reversal of 220112200001221 is 122100002211022.

It is a happy number.

It is not a de Polignac number, because 220112200001221 - 2⁷ = 220112200001093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220112200001195 and 220112200001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112200001231) 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, 391968610 + ... + 392529763.

It is an arithmetic number, because the mean of its divisors is an integer number (15674277512520).

Almost surely, 2^{220112200001221} is an apocalyptic number.

It is an amenable number.

220112200001221 is a deficient number, since it is larger than the sum of its proper divisors (30676240199099).

220112200001221 is a wasteful number, since it uses less digits than its factorization.

220112200001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784499516.

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

Adding to 220112200001221 its reverse (122100002211022), we get a palindrome (342212202212243).

The spelling of 220112200001221 in words is "two hundred twenty trillion, one hundred twelve billion, two hundred million, one thousand, two hundred twenty-one".