222443440121 has 4 divisors (see below), whose sum is σ = 254221074432. Its totient is φ = 190665805812.

The previous prime is 222443440111. The next prime is 222443440151. The reversal of 222443440121 is 121044344222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121044344222 = 2 ⋅60522172111.

It is a cyclic number.

It is not a de Polignac number, because 222443440121 - 2³⁴ = 205263570937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222443440111) 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, 15888817145 + ... + 15888817158.

It is an arithmetic number, because the mean of its divisors is an integer number (63555268608).

Almost surely, 2^222443440121 is an apocalyptic number.

It is an amenable number.

222443440121 is a deficient number, since it is larger than the sum of its proper divisors (31777634311).

222443440121 is an equidigital number, since it uses as much as digits as its factorization.

222443440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31777634310.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 222443440121 its reverse (121044344222), we get a palindrome (343487784343).

The spelling of 222443440121 in words is "two hundred twenty-two billion, four hundred forty-three million, four hundred forty thousand, one hundred twenty-one".