12127223736 has 48 divisors (see below), whose sum is σ = 32850005760. Its totient is φ = 4041738240.

The previous prime is 12127223729. The next prime is 12127223747. The reversal of 12127223736 is 63732272121.

12127223736 is a `hidden beast` number, since 1 + 212 + 72 + 2 + 373 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12127223736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626296 + ... + 645368.

It is an arithmetic number, because the mean of its divisors is an integer number (684375120).

Almost surely, 2^12127223736 is an apocalyptic number.

It is an amenable number.

12127223736 is an abundant number, since it is smaller than the sum of its proper divisors (20722782024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12127223736 is a wasteful number, since it uses less digits than its factorization.

12127223736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27916 (or 27909 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

Adding to 12127223736 its reverse (63732272121), we get a palindrome (75859495857).

The spelling of 12127223736 in words is "twelve billion, one hundred twenty-seven million, two hundred twenty-three thousand, seven hundred thirty-six".