12011320320231 has 16 divisors (see below), whose sum is σ = 16095960608000. Its totient is φ = 7967115402048.

The previous prime is 12011320320191. The next prime is 12011320320277. The reversal of 12011320320231 is 13202302311021.

It is not a de Polignac number, because 12011320320231 - 2¹⁷ = 12011320189159 is a prime.

It is a super-2 number, since 2×12011320320231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011320320198 and 12011320320207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011320320031) 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, 27042915 + ... + 27483483.

It is an arithmetic number, because the mean of its divisors is an integer number (1005997538000).

Almost surely, 2^{12011320320231} is an apocalyptic number.

12011320320231 is a deficient number, since it is larger than the sum of its proper divisors (4084640287769).

12011320320231 is a wasteful number, since it uses less digits than its factorization.

12011320320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486438.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12011320320231 its reverse (13202302311021), we get a palindrome (25213622631252).

The spelling of 12011320320231 in words is "twelve trillion, eleven billion, three hundred twenty million, three hundred twenty thousand, two hundred thirty-one".