12013023111 has 8 divisors (see below), whose sum is σ = 16061009664. Its totient is φ = 7986859320.

The previous prime is 12013023109. The next prime is 12013023193. The reversal of 12013023111 is 11132031021.

It is a happy number.

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

It is not a de Polignac number, because 12013023111 - 2¹ = 12013023109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013023101) 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, 5454405 + ... + 5456606.

It is an arithmetic number, because the mean of its divisors is an integer number (2007626208).

Almost surely, 2^12013023111 is an apocalyptic number.

12013023111 is a deficient number, since it is larger than the sum of its proper divisors (4047986553).

12013023111 is a wasteful number, since it uses less digits than its factorization.

12013023111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10911381.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12013023111 its reverse (11132031021), we get a palindrome (23145054132).

The spelling of 12013023111 in words is "twelve billion, thirteen million, twenty-three thousand, one hundred eleven".