222222110081 has 2 divisors, whose sum is σ = 222222110082. Its totient is φ = 222222110080.

The previous prime is 222222110063. The next prime is 222222110087. The reversal of 222222110081 is 180011222222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217939585600 + 4282524481 = 466840^2 + 65441^2 .

It is a cyclic number.

It is not a de Polignac number, because 222222110081 - 2¹⁴ = 222222093697 is a prime.

It is a super-2 number, since 2×222222110081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222222110087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111055040 + 111111055041.

It is an arithmetic number, because the mean of its divisors is an integer number (111111055041).

Almost surely, 2^222222110081 is an apocalyptic number.

It is an amenable number.

222222110081 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222110081 is an equidigital number, since it uses as much as digits as its factorization.

222222110081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 222222110081 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred ten thousand, eighty-one".