812022146822 has 4 divisors (see below), whose sum is σ = 1218033220236. Its totient is φ = 406011073410.

The previous prime is 812022146809. The next prime is 812022146857. The reversal of 812022146822 is 228641220218.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203005536704 + ... + 203005536707.

It is an arithmetic number, because the mean of its divisors is an integer number (304508305059).

Almost surely, 2^812022146822 is an apocalyptic number.

812022146822 is a deficient number, since it is larger than the sum of its proper divisors (406011073414).

812022146822 is a wasteful number, since it uses less digits than its factorization.

812022146822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406011073413.

The product of its (nonzero) digits is 49152, while the sum is 38.

The spelling of 812022146822 in words is "eight hundred twelve billion, twenty-two million, one hundred forty-six thousand, eight hundred twenty-two".