122210221211209 has 2 divisors, whose sum is σ = 122210221211210. Its totient is φ = 122210221211208.

The previous prime is 122210221211173. The next prime is 122210221211219. The reversal of 122210221211209 is 902112122012221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78561366345225 + 43648854865984 = 8863485^2 + 6606728^2 .

It is a cyclic number.

It is not a de Polignac number, because 122210221211209 - 2⁷ = 122210221211081 is a prime.

It is not a weakly prime, because it can be changed into another prime (122210221211219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61105110605604 + 61105110605605.

It is an arithmetic number, because the mean of its divisors is an integer number (61105110605605).

Almost surely, 2^{122210221211209} is an apocalyptic number.

It is an amenable number.

122210221211209 is a deficient number, since it is larger than the sum of its proper divisors (1).

122210221211209 is an equidigital number, since it uses as much as digits as its factorization.

122210221211209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 122210221211209 in words is "one hundred twenty-two trillion, two hundred ten billion, two hundred twenty-one million, two hundred eleven thousand, two hundred nine".