222665101 has 2 divisors, whose sum is σ = 222665102. Its totient is φ = 222665100.

The previous prime is 222665087. The next prime is 222665129. The reversal of 222665101 is 101566222.

222665101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217710025 + 4955076 = 14755^2 + 2226^2 .

It is a cyclic number.

It is not a de Polignac number, because 222665101 - 2¹³ = 222656909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222665171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111332550 + 111332551.

It is an arithmetic number, because the mean of its divisors is an integer number (111332551).

Almost surely, 2^222665101 is an apocalyptic number.

It is an amenable number.

222665101 is a deficient number, since it is larger than the sum of its proper divisors (1).

222665101 is an equidigital number, since it uses as much as digits as its factorization.

222665101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 222665101 is about 14921.9670620197. The cubic root of 222665101 is about 606.1089793368.

The spelling of 222665101 in words is "two hundred twenty-two million, six hundred sixty-five thousand, one hundred one".