12120678711 has 12 divisors (see below), whose sum is σ = 17794658440. Its totient is φ = 7947985680.

The previous prime is 12120678679. The next prime is 12120678719. The reversal of 12120678711 is 11787602121.

It is not a de Polignac number, because 12120678711 - 2⁵ = 12120678679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120678719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11038321 + ... + 11039418.

Almost surely, 2^12120678711 is an apocalyptic number.

12120678711 is a deficient number, since it is larger than the sum of its proper divisors (5673979729).

12120678711 is a wasteful number, since it uses less digits than its factorization.

12120678711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22077806 (or 22077803 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The spelling of 12120678711 in words is "twelve billion, one hundred twenty million, six hundred seventy-eight thousand, seven hundred eleven".