222222012209 has 2 divisors, whose sum is σ = 222222012210. Its totient is φ = 222222012208.

The previous prime is 222222012143. The next prime is 222222012223. The reversal of 222222012209 is 902210222222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201985527184 + 20236485025 = 449428^2 + 142255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222222012209 is a prime.

It is not a weakly prime, because it can be changed into another prime (222222012409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111006104 + 111111006105.

It is an arithmetic number, because the mean of its divisors is an integer number (111111006105).

Almost surely, 2^222222012209 is an apocalyptic number.

It is an amenable number.

222222012209 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222012209 is an equidigital number, since it uses as much as digits as its factorization.

222222012209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 222222012209 in words is "two hundred twenty-two billion, two hundred twenty-two million, twelve thousand, two hundred nine".