8112337921 has 4 divisors (see below), whose sum is σ = 8134442752. Its totient is φ = 8090233092.

The previous prime is 8112337901. The next prime is 8112337943. The reversal of 8112337921 is 1297332118.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8112337921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8112337901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11051865 + ... + 11052598.

It is an arithmetic number, because the mean of its divisors is an integer number (2033610688).

Almost surely, 2^8112337921 is an apocalyptic number.

It is an amenable number.

8112337921 is a deficient number, since it is larger than the sum of its proper divisors (22104831).

8112337921 is a wasteful number, since it uses less digits than its factorization.

8112337921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22104830.

The product of its digits is 18144, while the sum is 37.

The square root of 8112337921 is about 90068.5179238562. The cubic root of 8112337921 is about 2009.3180133106.

The spelling of 8112337921 in words is "eight billion, one hundred twelve million, three hundred thirty-seven thousand, nine hundred twenty-one".