222023121 has 4 divisors (see below), whose sum is σ = 296030832. Its totient is φ = 148015412.

The previous prime is 222023093. The next prime is 222023129. The reversal of 222023121 is 121320222.

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.

It is a cyclic number.

It is not a de Polignac number, because 222023121 - 2¹¹ = 222021073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222023121.

It is not an unprimeable number, because it can be changed into a prime (222023129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37003851 + ... + 37003856.

It is an arithmetic number, because the mean of its divisors is an integer number (74007708).

Almost surely, 2^222023121 is an apocalyptic number.

It is an amenable number.

222023121 is a deficient number, since it is larger than the sum of its proper divisors (74007711).

222023121 is an equidigital number, since it uses as much as digits as its factorization.

222023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74007710.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222023121 is about 14900.4402955080. The cubic root of 222023121 is about 605.5259147602.

Adding to 222023121 its reverse (121320222), we get a palindrome (343343343).

The spelling of 222023121 in words is "two hundred twenty-two million, twenty-three thousand, one hundred twenty-one".