12013203213231 has 16 divisors (see below), whose sum is σ = 18501617783808. Its totient is φ = 6852451030400.

The previous prime is 12013203213217. The next prime is 12013203213239. The reversal of 12013203213231 is 13231230231021.

It is a cyclic number.

It is not a de Polignac number, because 12013203213231 - 2³⁸ = 11738325306287 is a prime.

It is a super-2 number, since 2×12013203213231² (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 (12013203213239) 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, 10706954175 + ... + 10706955296.

It is an arithmetic number, because the mean of its divisors is an integer number (1156351111488).

Almost surely, 2^{12013203213231} is an apocalyptic number.

12013203213231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12013203213231 is a deficient number, since it is larger than the sum of its proper divisors (6488414570577).

12013203213231 is a wasteful number, since it uses less digits than its factorization.

12013203213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21413909502.

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

Adding to 12013203213231 its reverse (13231230231021), we get a palindrome (25244433444252).

The spelling of 12013203213231 in words is "twelve trillion, thirteen billion, two hundred three million, two hundred thirteen thousand, two hundred thirty-one".