12680111236 has 81 divisors (see below), whose sum is σ = 24777715599. Its totient is φ = 5675342400.

The previous prime is 12680111221. The next prime is 12680111237. The reversal of 12680111236 is 63211108621.

The square root of 12680111236 is 112606.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8917024900 + 3763086336 = 94430^2 + 61344^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12680111198 and 12680111207.

It is not an unprimeable number, because it can be changed into a prime (12680111237) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 178593081 + ... + 178593151.

Almost surely, 2^12680111236 is an apocalyptic number.

12680111236 is the 112606-th square number.

It is an amenable number.

12680111236 is a deficient number, since it is larger than the sum of its proper divisors (12097604363).

12680111236 is an equidigital number, since it uses as much as digits as its factorization.

12680111236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 12680111236 its reverse (63211108621), we get a palindrome (75891219857).

The spelling of 12680111236 in words is "twelve billion, six hundred eighty million, one hundred eleven thousand, two hundred thirty-six".