222442031257 has 2 divisors, whose sum is σ = 222442031258. Its totient is φ = 222442031256.

The previous prime is 222442031087. The next prime is 222442031333. The reversal of 222442031257 is 752130244222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221656406416 + 785624841 = 470804^2 + 28029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222442031257 is a prime.

It is not a weakly prime, because it can be changed into another prime (222442031057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111221015628 + 111221015629.

It is an arithmetic number, because the mean of its divisors is an integer number (111221015629).

Almost surely, 2^222442031257 is an apocalyptic number.

It is an amenable number.

222442031257 is a deficient number, since it is larger than the sum of its proper divisors (1).

222442031257 is an equidigital number, since it uses as much as digits as its factorization.

222442031257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 34.

Adding to 222442031257 its reverse (752130244222), we get a palindrome (974572275479).

The spelling of 222442031257 in words is "two hundred twenty-two billion, four hundred forty-two million, thirty-one thousand, two hundred fifty-seven".