12111203331 has 12 divisors (see below), whose sum is σ = 17494965280. Its totient is φ = 8073671760.

The previous prime is 12111203267. The next prime is 12111203333. The reversal of 12111203331 is 13330211121.

12111203331 is a `hidden beast` number, since 1 + 211 + 120 + 3 + 331 = 666.

It is not a de Polignac number, because 12111203331 - 2⁶ = 12111203267 is a prime.

It is a super-2 number, since 2×12111203331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111203333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212901 + ... + 263721.

Almost surely, 2^12111203331 is an apocalyptic number.

12111203331 is a deficient number, since it is larger than the sum of its proper divisors (5383761949).

12111203331 is a wasteful number, since it uses less digits than its factorization.

12111203331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77306 (or 77303 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12111203331 its reverse (13330211121), we get a palindrome (25441414452).

The spelling of 12111203331 in words is "twelve billion, one hundred eleven million, two hundred three thousand, three hundred thirty-one".