122085813 has 4 divisors (see below), whose sum is σ = 162781088. Its totient is φ = 81390540.

The previous prime is 122085757. The next prime is 122085841. The reversal of 122085813 is 318580221.

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.

It is not a de Polignac number, because 122085813 - 2⁶ = 122085749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122085713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20347633 + ... + 20347638.

It is an arithmetic number, because the mean of its divisors is an integer number (40695272).

Almost surely, 2^122085813 is an apocalyptic number.

It is an amenable number.

122085813 is a deficient number, since it is larger than the sum of its proper divisors (40695275).

122085813 is an equidigital number, since it uses as much as digits as its factorization.

122085813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40695274.

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

The square root of 122085813 is about 11049.2449063273. The cubic root of 122085813 is about 496.0838245533.

The spelling of 122085813 in words is "one hundred twenty-two million, eighty-five thousand, eight hundred thirteen".