122420423009 has 2 divisors, whose sum is σ = 122420423010. Its totient is φ = 122420423008.

The previous prime is 122420422981. The next prime is 122420423029. The reversal of 122420423009 is 900324024221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120389568784 + 2030854225 = 346972^2 + 45065^2 .

It is a cyclic number.

It is not a de Polignac number, because 122420423009 - 2²⁰ = 122419374433 is a prime.

It is a super-2 number, since 2×122420423009² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122420423029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61210211504 + 61210211505.

It is an arithmetic number, because the mean of its divisors is an integer number (61210211505).

Almost surely, 2^122420423009 is an apocalyptic number.

It is an amenable number.

122420423009 is a deficient number, since it is larger than the sum of its proper divisors (1).

122420423009 is an equidigital number, since it uses as much as digits as its factorization.

122420423009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 122420423009 in words is "one hundred twenty-two billion, four hundred twenty million, four hundred twenty-three thousand, nine".