222333121 has 2 divisors, whose sum is σ = 222333122. Its totient is φ = 222333120.

The previous prime is 222333113. The next prime is 222333127. The reversal of 222333121 is 121333222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151167025 + 71166096 = 12295^2 + 8436^2 .

It is a cyclic number.

It is not a de Polignac number, because 222333121 - 2³ = 222333113 is a prime.

It is not a weakly prime, because it can be changed into another prime (222333127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111166560 + 111166561.

It is an arithmetic number, because the mean of its divisors is an integer number (111166561).

Almost surely, 2^222333121 is an apocalyptic number.

It is an amenable number.

222333121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222333121 is an equidigital number, since it uses as much as digits as its factorization.

222333121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 19.

The square root of 222333121 is about 14910.8390441316. The cubic root of 222333121 is about 605.8076057475.

Adding to 222333121 its reverse (121333222), we get a palindrome (343666343).

It can be divided in two parts, 2223 and 33121, that added together give a square (35344 = 188²).

The spelling of 222333121 in words is "two hundred twenty-two million, three hundred thirty-three thousand, one hundred twenty-one".