12972220815 has 16 divisors (see below), whose sum is σ = 21039877728. Its totient is φ = 6823742976.

The previous prime is 12972220813. The next prime is 12972220819. The reversal of 12972220815 is 51802227921.

It is not a de Polignac number, because 12972220815 - 2¹ = 12972220813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12972220813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5922294 + ... + 5924483.

It is an arithmetic number, because the mean of its divisors is an integer number (1314992358).

Almost surely, 2^12972220815 is an apocalyptic number.

12972220815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12972220815 is a deficient number, since it is larger than the sum of its proper divisors (8067656913).

12972220815 is a wasteful number, since it uses less digits than its factorization.

12972220815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11846858.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 12972220815 in words is "twelve billion, nine hundred seventy-two million, two hundred twenty thousand, eight hundred fifteen".