12172711061200 has 30 divisors (see below), whose sum is σ = 29244938325494. Its totient is φ = 4869084424320.

The previous prime is 12172711061197. The next prime is 12172711061233. The reversal of 12172711061200 is 216011727121.

It can be written as a sum of positive squares in 3 ways, for example, as 3065328652864 + 9107382408336 = 1750808^2 + 3017844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15215888427 + ... + 15215889226.

Almost surely, 2^{12172711061200} is an apocalyptic number.

12172711061200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12172711061200 is an abundant number, since it is smaller than the sum of its proper divisors (17072227264294).

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

12172711061200 is a wasteful number, since it uses less digits than its factorization.

12172711061200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30431777671 (or 30431777660 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 31.

Adding to 12172711061200 its reverse (216011727121), we get a palindrome (12388722788321).

The spelling of 12172711061200 in words is "twelve trillion, one hundred seventy-two billion, seven hundred eleven million, sixty-one thousand, two hundred".