222450121 has 2 divisors, whose sum is σ = 222450122. Its totient is φ = 222450120.

The previous prime is 222450091. The next prime is 222450127. The reversal of 222450121 is 121054222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183873600 + 38576521 = 13560^2 + 6211^2 .

It is a cyclic number.

It is not a de Polignac number, because 222450121 - 2²³ = 214061513 is a prime.

It is not a weakly prime, because it can be changed into another prime (222450127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111225060 + 111225061.

It is an arithmetic number, because the mean of its divisors is an integer number (111225061).

Almost surely, 2^222450121 is an apocalyptic number.

It is an amenable number.

222450121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222450121 is an equidigital number, since it uses as much as digits as its factorization.

222450121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 222450121 is about 14914.7618485848. The cubic root of 222450121 is about 605.9138533158.

The spelling of 222450121 in words is "two hundred twenty-two million, four hundred fifty thousand, one hundred twenty-one".