122209993 has 2 divisors, whose sum is σ = 122209994. Its totient is φ = 122209992.

The previous prime is 122209981. The next prime is 122210027. The reversal of 122209993 is 399902221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121947849 + 262144 = 11043^2 + 512^2 .

It is a cyclic number.

It is not a de Polignac number, because 122209993 - 2⁵ = 122209961 is a prime.

It is not a weakly prime, because it can be changed into another prime (122209903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61104996 + 61104997.

It is an arithmetic number, because the mean of its divisors is an integer number (61104997).

Almost surely, 2^122209993 is an apocalyptic number.

It is an amenable number.

122209993 is a deficient number, since it is larger than the sum of its proper divisors (1).

122209993 is an equidigital number, since it uses as much as digits as its factorization.

122209993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 122209993 is about 11054.8628666302. The cubic root of 122209993 is about 496.2519653411.

The spelling of 122209993 in words is "one hundred twenty-two million, two hundred nine thousand, nine hundred ninety-three".