7212865172 has 12 divisors (see below), whose sum is σ = 12688601856. Its totient is φ = 3587550360.

The previous prime is 7212865171. The next prime is 7212865183. The reversal of 7212865172 is 2715682127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212865171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4719698 + ... + 4721225.

It is an arithmetic number, because the mean of its divisors is an integer number (1057383488).

Almost surely, 2^7212865172 is an apocalyptic number.

It is an amenable number.

7212865172 is a deficient number, since it is larger than the sum of its proper divisors (5475736684).

7212865172 is a wasteful number, since it uses less digits than its factorization.

7212865172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441118 (or 9441116 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 7212865172 is about 84928.5886612983. The cubic root of 7212865172 is about 1932.1281947808.

The spelling of 7212865172 in words is "seven billion, two hundred twelve million, eight hundred sixty-five thousand, one hundred seventy-two".