12011133001231 has 16 divisors (see below), whose sum is σ = 14783035857408. Its totient is φ = 9503247852000.

The previous prime is 12011133001229. The next prime is 12011133001253. The reversal of 12011133001231 is 13210033111021.

It is not a de Polignac number, because 12011133001231 - 2¹ = 12011133001229 is a prime.

It is a super-2 number, since 2×12011133001231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12011133001199 and 12011133001208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011133001261) 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, 15841296 + ... + 16582186.

It is an arithmetic number, because the mean of its divisors is an integer number (923939741088).

Almost surely, 2^{12011133001231} is an apocalyptic number.

12011133001231 is a deficient number, since it is larger than the sum of its proper divisors (2771902856177).

12011133001231 is a wasteful number, since it uses less digits than its factorization.

12011133001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919062.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 12011133001231 its reverse (13210033111021), we get a palindrome (25221166112252).

The spelling of 12011133001231 in words is "twelve trillion, eleven billion, one hundred thirty-three million, one thousand, two hundred thirty-one".