12120132311 has 6 divisors (see below), whose sum is σ = 14098929480. Its totient is φ = 10388684796.

The previous prime is 12120132293. The next prime is 12120132329. The reversal of 12120132311 is 11323102121.

It is an interprime number because it is at equal distance from previous prime (12120132293) and next prime (12120132329).

It is not a de Polignac number, because 12120132311 - 2¹⁴ = 12120115927 is a prime.

It is a super-2 number, since 2×12120132311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120132311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120132331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123674771 + ... + 123674868.

It is an arithmetic number, because the mean of its divisors is an integer number (2349821580).

Almost surely, 2^12120132311 is an apocalyptic number.

12120132311 is a deficient number, since it is larger than the sum of its proper divisors (1978797169).

12120132311 is an equidigital number, since it uses as much as digits as its factorization.

12120132311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247349653 (or 247349646 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12120132311 its reverse (11323102121), we get a palindrome (23443234432).

The spelling of 12120132311 in words is "twelve billion, one hundred twenty million, one hundred thirty-two thousand, three hundred eleven".