122580813 has 4 divisors (see below), whose sum is σ = 163441088. Its totient is φ = 81720540.

The previous prime is 122580793. The next prime is 122580817. The reversal of 122580813 is 318085221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 318085221 = 3 ⋅106028407.

It is not a de Polignac number, because 122580813 - 2⁶ = 122580749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122580817) 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 in 3 ways as a sum of consecutive naturals, for example, 20430133 + ... + 20430138.

It is an arithmetic number, because the mean of its divisors is an integer number (40860272).

Almost surely, 2^122580813 is an apocalyptic number.

It is an amenable number.

122580813 is a deficient number, since it is larger than the sum of its proper divisors (40860275).

122580813 is an equidigital number, since it uses as much as digits as its factorization.

122580813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40860274.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 122580813 is about 11071.6219678961. The cubic root of 122580813 is about 496.7533819033.

The spelling of 122580813 in words is "one hundred twenty-two million, five hundred eighty thousand, eight hundred thirteen".