813881301122 has 18 divisors (see below), whose sum is σ = 1251404773929. Its totient is φ = 396989752080.

The previous prime is 813881301113. The next prime is 813881301127. The reversal of 813881301122 is 221103188318.

It can be written as a sum of positive squares in 2 ways, for example, as 581240036881 + 232641264241 = 762391^2 + 482329^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=637919.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813881301127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 52301579 + ... + 52317137.

Almost surely, 2^813881301122 is an apocalyptic number.

813881301122 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

813881301122 is a deficient number, since it is larger than the sum of its proper divisors (437523472807).

813881301122 is an frugal number, since it uses more digits than its factorization.

813881301122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31202 (or 15602 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 813881301122 in words is "eight hundred thirteen billion, eight hundred eighty-one million, three hundred one thousand, one hundred twenty-two".