12011123331 has 24 divisors (see below), whose sum is σ = 17438541120. Its totient is φ = 7966350000.

The previous prime is 12011123317. The next prime is 12011123363. The reversal of 12011123331 is 13332111021.

It is not a de Polignac number, because 12011123331 - 2¹⁹ = 12010599043 is a prime.

It is a super-2 number, since 2×12011123331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12011123431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2371680 + ... + 2376738.

It is an arithmetic number, because the mean of its divisors is an integer number (726605880).

Almost surely, 2^12011123331 is an apocalyptic number.

12011123331 is a deficient number, since it is larger than the sum of its proper divisors (5427417789).

12011123331 is a wasteful number, since it uses less digits than its factorization.

12011123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367 (or 6364 counting only the distinct ones).

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

Adding to 12011123331 its reverse (13332111021), we get a palindrome (25343234352).

The spelling of 12011123331 in words is "twelve billion, eleven million, one hundred twenty-three thousand, three hundred thirty-one".