12127605501 has 8 divisors (see below), whose sum is σ = 17640153504. Its totient is φ = 7350063920.

The previous prime is 12127605499. The next prime is 12127605521. The reversal of 12127605501 is 10550672121.

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 12127605501 - 2¹ = 12127605499 is a prime.

It is a super-2 number, since 2×12127605501² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127605521) 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, 183751566 + ... + 183751631.

It is an arithmetic number, because the mean of its divisors is an integer number (2205019188).

Almost surely, 2^12127605501 is an apocalyptic number.

12127605501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12127605501 is a deficient number, since it is larger than the sum of its proper divisors (5512548003).

12127605501 is a wasteful number, since it uses less digits than its factorization.

12127605501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367503211.

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 12127605501 in words is "twelve billion, one hundred twenty-seven million, six hundred five thousand, five hundred one".