12120313311 has 16 divisors (see below), whose sum is σ = 17973477120. Its totient is φ = 8072353080.

The previous prime is 12120313307. The next prime is 12120313327. The reversal of 12120313311 is 11331302121.

12120313311 is a `hidden beast` number, since 1 + 21 + 20 + 313 + 311 = 666.

It is not a de Polignac number, because 12120313311 - 2² = 12120313307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120313811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189865 + ... + 245538.

It is an arithmetic number, because the mean of its divisors is an integer number (1123342320).

Almost surely, 2^12120313311 is an apocalyptic number.

12120313311 is a deficient number, since it is larger than the sum of its proper divisors (5853163809).

12120313311 is a wasteful number, since it uses less digits than its factorization.

12120313311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436443 (or 436437 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12120313311 its reverse (11331302121), we get a palindrome (23451615432).

The spelling of 12120313311 in words is "twelve billion, one hundred twenty million, three hundred thirteen thousand, three hundred eleven".