12011023233231 has 64 divisors (see below), whose sum is σ = 18114972433920. Its totient is φ = 7012087971840.

The previous prime is 12011023233221. The next prime is 12011023233233. The reversal of 12011023233231 is 13233232011021.

It is not a de Polignac number, because 12011023233231 - 2⁵ = 12011023233199 is a prime.

It is a super-2 number, since 2×12011023233231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011023233233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2330877151 + ... + 2330882303.

It is an arithmetic number, because the mean of its divisors is an integer number (283046444280).

Almost surely, 2^{12011023233231} is an apocalyptic number.

12011023233231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12011023233231 is a deficient number, since it is larger than the sum of its proper divisors (6103949200689).

12011023233231 is a wasteful number, since it uses less digits than its factorization.

12011023233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10376.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 12011023233231 its reverse (13233232011021), we get a palindrome (25244255244252).

The spelling of 12011023233231 in words is "twelve trillion, eleven billion, twenty-three million, two hundred thirty-three thousand, two hundred thirty-one".