222433121 has 2 divisors, whose sum is σ = 222433122. Its totient is φ = 222433120.

The previous prime is 222433073. The next prime is 222433181. The reversal of 222433121 is 121334222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170015521 + 52417600 = 13039^2 + 7240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222433121 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222433093 and 222433102.

It is not a weakly prime, because it can be changed into another prime (222433181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111216560 + 111216561.

It is an arithmetic number, because the mean of its divisors is an integer number (111216561).

Almost surely, 2^222433121 is an apocalyptic number.

It is an amenable number.

222433121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222433121 is an equidigital number, since it uses as much as digits as its factorization.

222433121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 20.

The square root of 222433121 is about 14914.1919325185. The cubic root of 222433121 is about 605.8984179486.

Adding to 222433121 its reverse (121334222), we get a palindrome (343767343).

The spelling of 222433121 in words is "two hundred twenty-two million, four hundred thirty-three thousand, one hundred twenty-one".