222120303121 has 4 divisors (see below), whose sum is σ = 222121948644. Its totient is φ = 222118657600.

The previous prime is 222120303089. The next prime is 222120303161. The reversal of 222120303121 is 121303021222.

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 118074704400 + 104045598721 = 343620^2 + 322561^2 .

It is a cyclic number.

It is not a de Polignac number, because 222120303121 - 2⁵ = 222120303089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222120303161) 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, 600220 + ... + 896941.

It is an arithmetic number, because the mean of its divisors is an integer number (55530487161).

Almost surely, 2^222120303121 is an apocalyptic number.

It is an amenable number.

222120303121 is a deficient number, since it is larger than the sum of its proper divisors (1645523).

222120303121 is a wasteful number, since it uses less digits than its factorization.

222120303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645522.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 222120303121 its reverse (121303021222), we get a palindrome (343423324343).

The spelling of 222120303121 in words is "two hundred twenty-two billion, one hundred twenty million, three hundred three thousand, one hundred twenty-one".