222456881 has 2 divisors, whose sum is σ = 222456882. Its totient is φ = 222456880.

The previous prime is 222456877. The next prime is 222456907. The reversal of 222456881 is 188654222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202350625 + 20106256 = 14225^2 + 4484^2 .

It is a cyclic number.

It is not a de Polignac number, because 222456881 - 2² = 222456877 is a prime.

It is a super-2 number, since 2×222456881² = 98974127808496322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222456581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111228440 + 111228441.

It is an arithmetic number, because the mean of its divisors is an integer number (111228441).

Almost surely, 2^222456881 is an apocalyptic number.

It is an amenable number.

222456881 is a deficient number, since it is larger than the sum of its proper divisors (1).

222456881 is an equidigital number, since it uses as much as digits as its factorization.

222456881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 38.

The square root of 222456881 is about 14914.9884679808. The cubic root of 222456881 is about 605.9199909256.

The spelling of 222456881 in words is "two hundred twenty-two million, four hundred fifty-six thousand, eight hundred eighty-one".