812122 has 8 divisors (see below), whose sum is σ = 1224000. Its totient is φ = 404124.

The previous prime is 812101. The next prime is 812129. The reversal of 812122 is 221218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 812096 and 812105.

It is not an unprimeable number, because it can be changed into a prime (812129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372 + ... + 1327.

It is an arithmetic number, because the mean of its divisors is an integer number (153000).

2⁸¹²¹²² is an apocalyptic number.

812122 is a deficient number, since it is larger than the sum of its proper divisors (411878).

812122 is a wasteful number, since it uses less digits than its factorization.

812122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940.

The product of its digits is 64, while the sum is 16.

The square root of 812122 is about 901.1781177991. The cubic root of 812122 is about 93.2983060171.

The spelling of 812122 in words is "eight hundred twelve thousand, one hundred twenty-two".