8212715722120 has 64 divisors (see below), whose sum is σ = 22742905086720. Its totient is φ = 2599189150464.

The previous prime is 8212715722111. The next prime is 8212715722147. The reversal of 8212715722120 is 212275172128.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 in 15 ways as a sum of consecutive naturals, for example, 1128116652 + ... + 1128123931.

It is an arithmetic number, because the mean of its divisors is an integer number (355357891980).

Almost surely, 2^{8212715722120} is an apocalyptic number.

It is an amenable number.

8212715722120 is an abundant number, since it is smaller than the sum of its proper divisors (14530189364600).

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

8212715722120 is a wasteful number, since it uses less digits than its factorization.

8212715722120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256240614 (or 2256240610 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The spelling of 8212715722120 in words is "eight trillion, two hundred twelve billion, seven hundred fifteen million, seven hundred twenty-two thousand, one hundred twenty".