12011023331 has 16 divisors (see below), whose sum is σ = 12290952960. Its totient is φ = 11735312160.

The previous prime is 12011023327. The next prime is 12011023333. The reversal of 12011023331 is 13332011021.

It is a cyclic number.

It is not a de Polignac number, because 12011023331 - 2² = 12011023327 is a prime.

It is a super-2 number, since 2×12011023331² (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 (12011023333) 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, 2412761 + ... + 2417733.

It is an arithmetic number, because the mean of its divisors is an integer number (768184560).

Almost surely, 2^12011023331 is an apocalyptic number.

12011023331 is a deficient number, since it is larger than the sum of its proper divisors (279929629).

12011023331 is a wasteful number, since it uses less digits than its factorization.

12011023331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5386.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12011023331 its reverse (13332011021), we get a palindrome (25343034352).

The spelling of 12011023331 in words is "twelve billion, eleven million, twenty-three thousand, three hundred thirty-one".