12220112200221 has 6 divisors (see below), whose sum is σ = 17651273178110. Its totient is φ = 8146741466808.

The previous prime is 12220112200187. The next prime is 12220112200237. The reversal of 12220112200221 is 12200221102221.

It is a happy number.

12220112200221 is a `hidden beast` number, since 1 + 2 + 220 + 1 + 1 + 220 + 0 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11146016259225 + 1074095940996 = 3338565^2 + 1036386^2 .

It is not a de Polignac number, because 12220112200221 - 2¹⁷ = 12220112069149 is a prime.

It is a super-2 number, since 2×12220112200221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220112200194 and 12220112200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220112200721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678895122226 + ... + 678895122243.

Almost surely, 2^{12220112200221} is an apocalyptic number.

It is an amenable number.

12220112200221 is a deficient number, since it is larger than the sum of its proper divisors (5431160977889).

12220112200221 is a wasteful number, since it uses less digits than its factorization.

12220112200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357790244475 (or 1357790244472 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12220112200221 its reverse (12200221102221), we get a palindrome (24420333302442).

The spelling of 12220112200221 in words is "twelve trillion, two hundred twenty billion, one hundred twelve million, two hundred thousand, two hundred twenty-one".