222122309 has 2 divisors, whose sum is σ = 222122310. Its totient is φ = 222122308.

The previous prime is 222122291. The next prime is 222122333. The reversal of 222122309 is 903221222.

222122309 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., 205492225 + 16630084 = 14335^2 + 4078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222122309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222122399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061154 + 111061155.

It is an arithmetic number, because the mean of its divisors is an integer number (111061155).

Almost surely, 2^222122309 is an apocalyptic number.

It is an amenable number.

222122309 is a deficient number, since it is larger than the sum of its proper divisors (1).

222122309 is an equidigital number, since it uses as much as digits as its factorization.

222122309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 222122309 is about 14903.7682818809. The cubic root of 222122309 is about 605.6160734824.

The spelling of 222122309 in words is "two hundred twenty-two million, one hundred twenty-two thousand, three hundred nine".