12011021112231 has 12 divisors (see below), whose sum is σ = 17474067487240. Its totient is φ = 7949740591440.

The previous prime is 12011021112227. The next prime is 12011021112241. The reversal of 12011021112231 is 13221112011021.

It is a happy number.

12011021112231 is a `hidden beast` number, since 1 + 201 + 10 + 211 + 12 + 231 = 666.

12011021112231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12011021112231 - 2² = 12011021112227 is a prime.

It is a super-2 number, since 2×12011021112231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011021112241) 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, 4800566740 + ... + 4800569241.

Almost surely, 2^{12011021112231} is an apocalyptic number.

12011021112231 is a deficient number, since it is larger than the sum of its proper divisors (5463046375009).

12011021112231 is a wasteful number, since it uses less digits than its factorization.

12011021112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9601136126 (or 9601136123 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12011021112231 its reverse (13221112011021), we get a palindrome (25232133123252).

The spelling of 12011021112231 in words is "twelve trillion, eleven billion, twenty-one million, one hundred twelve thousand, two hundred thirty-one".