12155122039 has 8 divisors (see below), whose sum is σ = 12202714368. Its totient is φ = 12107556960.

The previous prime is 12155121947. The next prime is 12155122061. The reversal of 12155122039 is 93022155121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12155122039 - 2¹³ = 12155113847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12155122039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155122069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619754 + ... + 1627240.

It is an arithmetic number, because the mean of its divisors is an integer number (1525339296).

Almost surely, 2^12155122039 is an apocalyptic number.

12155122039 is a deficient number, since it is larger than the sum of its proper divisors (47592329).

12155122039 is an equidigital number, since it uses as much as digits as its factorization.

12155122039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13625.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 12155122039 in words is "twelve billion, one hundred fifty-five million, one hundred twenty-two thousand, thirty-nine".