812322223218 has 48 divisors (see below), whose sum is σ = 2021088794400. Its totient is φ = 233202551040.

The previous prime is 812322223187. The next prime is 812322223261.

812322223218 is a `hidden beast` number, since 8 + 1 + 2 + 322 + 2 + 2 + 321 + 8 = 666.

812322223218 is nontrivially palindromic in base 10.

812322223218 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107960383 + ... + 107967906.

It is an arithmetic number, because the mean of its divisors is an integer number (42106016550).

Almost surely, 2^812322223218 is an apocalyptic number.

812322223218 is an abundant number, since it is smaller than the sum of its proper divisors (1208766571182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812322223218 is a wasteful number, since it uses less digits than its factorization.

812322223218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215928327 (or 215928324 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The spelling of 812322223218 in words is "eight hundred twelve billion, three hundred twenty-two million, two hundred twenty-three thousand, two hundred eighteen".