12001131331 has 16 divisors (see below), whose sum is σ = 13792683520. Its totient is φ = 10229016960.

The previous prime is 12001131287. The next prime is 12001131347. The reversal of 12001131331 is 13313110021.

It is a cyclic number.

It is not a de Polignac number, because 12001131331 - 2²⁵ = 11967576899 is a prime.

It is a super-2 number, since 2×12001131331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12001131391) 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, 937051 + ... + 949771.

It is an arithmetic number, because the mean of its divisors is an integer number (862042720).

Almost surely, 2^12001131331 is an apocalyptic number.

12001131331 is a deficient number, since it is larger than the sum of its proper divisors (1791552189).

12001131331 is a wasteful number, since it uses less digits than its factorization.

12001131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13474.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 12001131331 its reverse (13313110021), we get a palindrome (25314241352).

The spelling of 12001131331 in words is "twelve billion, one million, one hundred thirty-one thousand, three hundred thirty-one".