222189162661 has 2 divisors, whose sum is σ = 222189162662. Its totient is φ = 222189162660.

The previous prime is 222189162623. The next prime is 222189162667. The reversal of 222189162661 is 166261981222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204693809761 + 17495352900 = 452431^2 + 132270^2 .

It is a cyclic number.

It is not a de Polignac number, because 222189162661 - 2¹³ = 222189154469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222189162667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111094581330 + 111094581331.

It is an arithmetic number, because the mean of its divisors is an integer number (111094581331).

Almost surely, 2^222189162661 is an apocalyptic number.

It is an amenable number.

222189162661 is a deficient number, since it is larger than the sum of its proper divisors (1).

222189162661 is an equidigital number, since it uses as much as digits as its factorization.

222189162661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 46.

The spelling of 222189162661 in words is "two hundred twenty-two billion, one hundred eighty-nine million, one hundred sixty-two thousand, six hundred sixty-one".