222457901 has 2 divisors, whose sum is σ = 222457902. Its totient is φ = 222457900.

The previous prime is 222457897. The next prime is 222457913. The reversal of 222457901 is 109754222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222457225 + 676 = 14915^2 + 26^2 .

It is a cyclic number.

It is not a de Polignac number, because 222457901 - 2² = 222457897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222457931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111228950 + 111228951.

It is an arithmetic number, because the mean of its divisors is an integer number (111228951).

Almost surely, 2^222457901 is an apocalyptic number.

It is an amenable number.

222457901 is a deficient number, since it is larger than the sum of its proper divisors (1).

222457901 is an equidigital number, since it uses as much as digits as its factorization.

222457901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 222457901 is about 14915.0226617327. The cubic root of 222457901 is about 605.9209170039.

The spelling of 222457901 in words is "two hundred twenty-two million, four hundred fifty-seven thousand, nine hundred one".