122220610909 has 2 divisors, whose sum is σ = 122220610910. Its totient is φ = 122220610908.

The previous prime is 122220610903. The next prime is 122220610973. The reversal of 122220610909 is 909016022221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85585502500 + 36635108409 = 292550^2 + 191403^2 .

It is a cyclic number.

It is not a de Polignac number, because 122220610909 - 2⁵ = 122220610877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220610903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110305454 + 61110305455.

It is an arithmetic number, because the mean of its divisors is an integer number (61110305455).

Almost surely, 2^122220610909 is an apocalyptic number.

It is an amenable number.

122220610909 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220610909 is an equidigital number, since it uses as much as digits as its factorization.

122220610909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 122220610909 in words is "one hundred twenty-two billion, two hundred twenty million, six hundred ten thousand, nine hundred nine".