222220310209 has 2 divisors, whose sum is σ = 222220310210. Its totient is φ = 222220310208.

The previous prime is 222220310141. The next prime is 222220310243. The reversal of 222220310209 is 902013022222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144074903184 + 78145407025 = 379572^2 + 279545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222220310209 is a prime.

It is not a weakly prime, because it can be changed into another prime (222220310509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110155104 + 111110155105.

It is an arithmetic number, because the mean of its divisors is an integer number (111110155105).

Almost surely, 2^222220310209 is an apocalyptic number.

It is an amenable number.

222220310209 is a deficient number, since it is larger than the sum of its proper divisors (1).

222220310209 is an equidigital number, since it uses as much as digits as its factorization.

222220310209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 222220310209 in words is "two hundred twenty-two billion, two hundred twenty million, three hundred ten thousand, two hundred nine".