12127915149 has 16 divisors (see below), whose sum is σ = 18504689280. Its totient is φ = 6921216000.

The previous prime is 12127915133. The next prime is 12127915171. The reversal of 12127915149 is 94151972121.

It is not a de Polignac number, because 12127915149 - 2⁴ = 12127915133 is a prime.

It is a super-2 number, since 2×12127915149² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12127915149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127915949) 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, 359352 + ... + 391649.

It is an arithmetic number, because the mean of its divisors is an integer number (1156543080).

Almost surely, 2^12127915149 is an apocalyptic number.

It is an amenable number.

12127915149 is a deficient number, since it is larger than the sum of its proper divisors (6376774131).

12127915149 is an equidigital number, since it uses as much as digits as its factorization.

12127915149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751780.

The product of its digits is 45360, while the sum is 42.

The spelling of 12127915149 in words is "twelve billion, one hundred twenty-seven million, nine hundred fifteen thousand, one hundred forty-nine".