12112215120 has 100 divisors (see below), whose sum is σ = 42067540020. Its totient is φ = 3229922304.

The previous prime is 12112215113. The next prime is 12112215161. The reversal of 12112215120 is 2151221121.

12112215120 is a `hidden beast` number, since 121 + 12 + 21 + 512 + 0 = 666.

12112215120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1377597456 + 10734617664 = 37116^2 + 103608^2 .

It is a super-2 number, since 2×12112215120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12112215093 and 12112215102.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 928105 + ... + 941064.

Almost surely, 2^12112215120 is an apocalyptic number.

12112215120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112215120 is an abundant number, since it is smaller than the sum of its proper divisors (29955324900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12112215120 is a wasteful number, since it uses less digits than its factorization.

12112215120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869194 (or 1869179 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 12112215120 its reverse (2151221121), we get a palindrome (14263436241).

The spelling of 12112215120 in words is "twelve billion, one hundred twelve million, two hundred fifteen thousand, one hundred twenty".