12127701505 has 16 divisors (see below), whose sum is σ = 14601787200. Its totient is φ = 9669844800.

The previous prime is 12127701503. The next prime is 12127701563. The reversal of 12127701505 is 50510772121.

It is not a de Polignac number, because 12127701505 - 2¹ = 12127701503 is a prime.

It is a super-2 number, since 2×12127701505² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12127701503) 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, 2991730 + ... + 2995780.

It is an arithmetic number, because the mean of its divisors is an integer number (912611700).

Almost surely, 2^12127701505 is an apocalyptic number.

It is an amenable number.

12127701505 is a deficient number, since it is larger than the sum of its proper divisors (2474085695).

12127701505 is a wasteful number, since it uses less digits than its factorization.

12127701505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5904.

The product of its (nonzero) digits is 4900, while the sum is 31.

The spelling of 12127701505 in words is "twelve billion, one hundred twenty-seven million, seven hundred one thousand, five hundred five".