12732221939 has 4 divisors (see below), whose sum is σ = 12733423560. Its totient is φ = 12731020320.

The previous prime is 12732221923. The next prime is 12732221963. The reversal of 12732221939 is 93912223721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12732221939 - 2⁴ = 12732221923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12732221896 and 12732221905.

It is not an unprimeable number, because it can be changed into a prime (12732221969) 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, 584774 + ... + 606155.

It is an arithmetic number, because the mean of its divisors is an integer number (3183355890).

Almost surely, 2^12732221939 is an apocalyptic number.

12732221939 is a deficient number, since it is larger than the sum of its proper divisors (1201621).

12732221939 is a wasteful number, since it uses less digits than its factorization.

12732221939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201620.

The product of its digits is 81648, while the sum is 41.

The spelling of 12732221939 in words is "twelve billion, seven hundred thirty-two million, two hundred twenty-one thousand, nine hundred thirty-nine".