12138075127 has 8 divisors (see below), whose sum is σ = 12288439296. Its totient is φ = 11987809272.

The previous prime is 12138075113. The next prime is 12138075139. The reversal of 12138075127 is 72157083121.

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 12138075127 - 2¹⁹ = 12137550839 is a prime.

It is a super-2 number, since 2×12138075127² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12138075227) 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, 241578 + ... + 287464.

It is an arithmetic number, because the mean of its divisors is an integer number (1536054912).

Almost surely, 2^12138075127 is an apocalyptic number.

12138075127 is a deficient number, since it is larger than the sum of its proper divisors (150364169).

12138075127 is an equidigital number, since it uses as much as digits as its factorization.

12138075127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49157.

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 12138075127 in words is "twelve billion, one hundred thirty-eight million, seventy-five thousand, one hundred twenty-seven".