12011203231231 has 8 divisors (see below), whose sum is σ = 12717776582640. Its totient is φ = 11304633433728.

The previous prime is 12011203231207. The next prime is 12011203231241. The reversal of 12011203231231 is 13213230211021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011203231231 - 2³⁵ = 11976843492863 is a prime.

It is a super-2 number, since 2×12011203231231² (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 (12011203231241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9623065 + ... + 10799341.

It is an arithmetic number, because the mean of its divisors is an integer number (1589722072830).

Almost surely, 2^{12011203231231} is an apocalyptic number.

12011203231231 is a deficient number, since it is larger than the sum of its proper divisors (706573351409).

12011203231231 is a wasteful number, since it uses less digits than its factorization.

12011203231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776953.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12011203231231 its reverse (13213230211021), we get a palindrome (25224433442252).

The spelling of 12011203231231 in words is "twelve trillion, eleven billion, two hundred three million, two hundred thirty-one thousand, two hundred thirty-one".