12112001331 has 16 divisors (see below), whose sum is σ = 16516659456. Its totient is φ = 7892165216.

The previous prime is 12112001323. The next prime is 12112001333. The reversal of 12112001331 is 13310021121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12112001331 - 2³ = 12112001323 is a prime.

It is a super-2 number, since 2×12112001331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12112001331.

It is not an unprimeable number, because it can be changed into a prime (12112001333) 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, 103005 + ... + 186638.

It is an arithmetic number, because the mean of its divisors is an integer number (1032291216).

Almost surely, 2^12112001331 is an apocalyptic number.

12112001331 is a deficient number, since it is larger than the sum of its proper divisors (4404658125).

12112001331 is a wasteful number, since it uses less digits than its factorization.

12112001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289962.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12112001331 its reverse (13310021121), we get a palindrome (25422022452).

The spelling of 12112001331 in words is "twelve billion, one hundred twelve million, one thousand, three hundred thirty-one".