222434257 has 2 divisors, whose sum is σ = 222434258. Its totient is φ = 222434256.

The previous prime is 222434213. The next prime is 222434281. The reversal of 222434257 is 752434222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151807041 + 70627216 = 12321^2 + 8404^2 .

It is a cyclic number.

It is not a de Polignac number, because 222434257 - 2⁷ = 222434129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222434297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111217128 + 111217129.

It is an arithmetic number, because the mean of its divisors is an integer number (111217129).

Almost surely, 2^222434257 is an apocalyptic number.

It is an amenable number.

222434257 is a deficient number, since it is larger than the sum of its proper divisors (1).

222434257 is an equidigital number, since it uses as much as digits as its factorization.

222434257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 31.

The square root of 222434257 is about 14914.2300170005. The cubic root of 222434257 is about 605.8994494188.

Adding to 222434257 its reverse (752434222), we get a palindrome (974868479).

It can be divided in two parts, 2224 and 34257, that added together give a square (36481 = 191²).

The spelling of 222434257 in words is "two hundred twenty-two million, four hundred thirty-four thousand, two hundred fifty-seven".