222665129 has 2 divisors, whose sum is σ = 222665130. Its totient is φ = 222665128.

The previous prime is 222665101. The next prime is 222665171. The reversal of 222665129 is 921566222.

222665129 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., 189337600 + 33327529 = 13760^2 + 5773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222665129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222665029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111332564 + 111332565.

It is an arithmetic number, because the mean of its divisors is an integer number (111332565).

Almost surely, 2^222665129 is an apocalyptic number.

It is an amenable number.

222665129 is a deficient number, since it is larger than the sum of its proper divisors (1).

222665129 is an equidigital number, since it uses as much as digits as its factorization.

222665129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 222665129 is about 14921.9680002337. The cubic root of 222665129 is about 606.1090047428.

The spelling of 222665129 in words is "two hundred twenty-two million, six hundred sixty-five thousand, one hundred twenty-nine".