122209999949 has 2 divisors, whose sum is σ = 122209999950. Its totient is φ = 122209999948.

The previous prime is 122209999939. The next prime is 122210000039. The reversal of 122209999949 is 949999902221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90896220100 + 31313779849 = 301490^2 + 176957^2 .

It is a cyclic number.

It is not a de Polignac number, because 122209999949 - 2²⁴ = 122193222733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122209999939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61104999974 + 61104999975.

It is an arithmetic number, because the mean of its divisors is an integer number (61104999975).

Almost surely, 2^122209999949 is an apocalyptic number.

It is an amenable number.

122209999949 is a deficient number, since it is larger than the sum of its proper divisors (1).

122209999949 is an equidigital number, since it uses as much as digits as its factorization.

122209999949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17006112, while the sum is 65.

The spelling of 122209999949 in words is "one hundred twenty-two billion, two hundred nine million, nine hundred ninety-nine thousand, nine hundred forty-nine".