222298981 has 2 divisors, whose sum is σ = 222298982. Its totient is φ = 222298980.

The previous prime is 222298963. The next prime is 222299023. The reversal of 222298981 is 189892222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218034756 + 4264225 = 14766^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 222298981 - 2¹⁷ = 222167909 is a prime.

It is a super-2 number, since 2×222298981² = 98833673907276722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222298931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111149490 + 111149491.

It is an arithmetic number, because the mean of its divisors is an integer number (111149491).

Almost surely, 2^222298981 is an apocalyptic number.

It is an amenable number.

222298981 is a deficient number, since it is larger than the sum of its proper divisors (1).

222298981 is an equidigital number, since it uses as much as digits as its factorization.

222298981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 222298981 is about 14909.6941953884. The cubic root of 222298981 is about 605.7765962271.

The spelling of 222298981 in words is "two hundred twenty-two million, two hundred ninety-eight thousand, nine hundred eighty-one".