12660026111 has 2 divisors, whose sum is σ = 12660026112. Its totient is φ = 12660026110.

The previous prime is 12660026087. The next prime is 12660026143. The reversal of 12660026111 is 11162006621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12660026111 is a prime.

It is a super-2 number, since 2×12660026111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12660026011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6330013055 + 6330013056.

It is an arithmetic number, because the mean of its divisors is an integer number (6330013056).

Almost surely, 2^12660026111 is an apocalyptic number.

12660026111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12660026111 is an equidigital number, since it uses as much as digits as its factorization.

12660026111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 12660026111 in words is "twelve billion, six hundred sixty million, twenty-six thousand, one hundred eleven".