122222122109 has 2 divisors, whose sum is σ = 122222122110. Its totient is φ = 122222122108.

The previous prime is 122222122097. The next prime is 122222122117. The reversal of 122222122109 is 901221222221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84422208025 + 37799914084 = 290555^2 + 194422^2 .

It is a cyclic number.

It is not a de Polignac number, because 122222122109 - 2¹⁶ = 122222056573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122222122609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61111061054 + 61111061055.

It is an arithmetic number, because the mean of its divisors is an integer number (61111061055).

Almost surely, 2^122222122109 is an apocalyptic number.

It is an amenable number.

122222122109 is a deficient number, since it is larger than the sum of its proper divisors (1).

122222122109 is an equidigital number, since it uses as much as digits as its factorization.

122222122109 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 26.

The spelling of 122222122109 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred nine".