12120233331 has 4 divisors (see below), whose sum is σ = 16160311112. Its totient is φ = 8080155552.

The previous prime is 12120233303. The next prime is 12120233357. The reversal of 12120233331 is 13333202121.

12120233331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13333202121 = 3 ⋅4444400707.

It is not a de Polignac number, because 12120233331 - 2⁵ = 12120233299 is a prime.

It is a super-2 number, since 2×12120233331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120233298 and 12120233307.

It is not an unprimeable number, because it can be changed into a prime (12120233371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020038886 + ... + 2020038891.

It is an arithmetic number, because the mean of its divisors is an integer number (4040077778).

Almost surely, 2^12120233331 is an apocalyptic number.

12120233331 is a deficient number, since it is larger than the sum of its proper divisors (4040077781).

12120233331 is an equidigital number, since it uses as much as digits as its factorization.

12120233331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040077780.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12120233331 its reverse (13333202121), we get a palindrome (25453435452).

The spelling of 12120233331 in words is "twelve billion, one hundred twenty million, two hundred thirty-three thousand, three hundred thirty-one".