222261101 has 2 divisors, whose sum is σ = 222261102. Its totient is φ = 222261100.

The previous prime is 222261079. The next prime is 222261173. The reversal of 222261101 is 101162222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221980201 + 280900 = 14899^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 222261101 - 2¹⁸ = 221998957 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222261101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222261001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111130550 + 111130551.

It is an arithmetic number, because the mean of its divisors is an integer number (111130551).

Almost surely, 2^222261101 is an apocalyptic number.

It is an amenable number.

222261101 is a deficient number, since it is larger than the sum of its proper divisors (1).

222261101 is an equidigital number, since it uses as much as digits as its factorization.

222261101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 222261101 is about 14908.4238268168. The cubic root of 222261101 is about 605.7421859314.

The spelling of 222261101 in words is "two hundred twenty-two million, two hundred sixty-one thousand, one hundred one".