12139321245 has 32 divisors (see below), whose sum is σ = 19534217472. Its totient is φ = 6437302272.

The previous prime is 12139321219. The next prime is 12139321253. The reversal of 12139321245 is 54212393121.

It is not a de Polignac number, because 12139321245 - 2¹¹ = 12139319197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2273599 + ... + 2278931.

It is an arithmetic number, because the mean of its divisors is an integer number (610444296).

Almost surely, 2^12139321245 is an apocalyptic number.

12139321245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12139321245 is a deficient number, since it is larger than the sum of its proper divisors (7394896227).

12139321245 is a wasteful number, since it uses less digits than its factorization.

12139321245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181.

The product of its digits is 12960, while the sum is 33.

The spelling of 12139321245 in words is "twelve billion, one hundred thirty-nine million, three hundred twenty-one thousand, two hundred forty-five".