12111131101023 has 32 divisors (see below), whose sum is σ = 18160067116800. Its totient is φ = 7976160426528.

The previous prime is 12111131101021. The next prime is 12111131101067. The reversal of 12111131101023 is 32010113111121.

It is not a de Polignac number, because 12111131101023 - 2¹ = 12111131101021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12111131100987 and 12111131101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111131101021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28155361 + ... + 28582277.

It is an arithmetic number, because the mean of its divisors is an integer number (567502097400).

Almost surely, 2^{12111131101023} is an apocalyptic number.

12111131101023 is a deficient number, since it is larger than the sum of its proper divisors (6048936015777).

12111131101023 is a wasteful number, since it uses less digits than its factorization.

12111131101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439668 (or 439662 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 12111131101023 its reverse (32010113111121), we get a palindrome (44121244212144).

The spelling of 12111131101023 in words is "twelve trillion, one hundred eleven billion, one hundred thirty-one million, one hundred one thousand, twenty-three".