122818805 has 8 divisors (see below), whose sum is σ = 147616344. Its totient is φ = 98099200.

The previous prime is 122818789. The next prime is 122818847. The reversal of 122818805 is 508818221.

It can be written as a sum of positive squares in 4 ways, for example, as 40934404 + 81884401 = 6398^2 + 9049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122818805 - 2⁴ = 122818789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 15956 + ... + 22365.

It is an arithmetic number, because the mean of its divisors is an integer number (18452043).

Almost surely, 2^122818805 is an apocalyptic number.

It is an amenable number.

122818805 is a deficient number, since it is larger than the sum of its proper divisors (24797539).

122818805 is an equidigital number, since it uses as much as digits as its factorization.

122818805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38967.

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 122818805 is about 11082.3645942551. The cubic root of 122818805 is about 497.0746581285.

The spelling of 122818805 in words is "one hundred twenty-two million, eight hundred eighteen thousand, eight hundred five".