122826813 has 4 divisors (see below), whose sum is σ = 163769088. Its totient is φ = 81884540.

The previous prime is 122826797. The next prime is 122826827. The reversal of 122826813 is 318628221.

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: 318628221 = 3 ⋅106209407.

It is a cyclic number.

It is not a de Polignac number, because 122826813 - 2⁴ = 122826797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122826113) 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 in 3 ways as a sum of consecutive naturals, for example, 20471133 + ... + 20471138.

It is an arithmetic number, because the mean of its divisors is an integer number (40942272).

Almost surely, 2^122826813 is an apocalyptic number.

It is an amenable number.

122826813 is a deficient number, since it is larger than the sum of its proper divisors (40942275).

122826813 is an equidigital number, since it uses as much as digits as its factorization.

122826813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40942274.

The product of its digits is 9216, while the sum is 33.

The square root of 122826813 is about 11082.7258831029. The cubic root of 122826813 is about 497.0854612715.

The spelling of 122826813 in words is "one hundred twenty-two million, eight hundred twenty-six thousand, eight hundred thirteen".