812620229022 has 96 divisors (see below), whose sum is σ = 2133346924800. Its totient is φ = 218374838784.

The previous prime is 812620229021. The next prime is 812620229089. The reversal of 812620229022 is 220922026218.

812620229022 is a `hidden beast` number, since 8 + 1 + 2 + 620 + 2 + 2 + 9 + 0 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812620229021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 888243 + ... + 1553774.

It is an arithmetic number, because the mean of its divisors is an integer number (22222363800).

Almost surely, 2^812620229022 is an apocalyptic number.

812620229022 is an abundant number, since it is smaller than the sum of its proper divisors (1320726695778).

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

812620229022 is a wasteful number, since it uses less digits than its factorization.

812620229022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442190 (or 2442187 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 812620229022 in words is "eight hundred twelve billion, six hundred twenty million, two hundred twenty-nine thousand, twenty-two".