12111231013 has 8 divisors (see below), whose sum is σ = 13842840128. Its totient is φ = 10379980224.

The previous prime is 12111230987. The next prime is 12111231017. The reversal of 12111231013 is 31013211121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12111231013 - 2⁵ = 12111230981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111231017) 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, 12756 + ... + 156157.

It is an arithmetic number, because the mean of its divisors is an integer number (1730355016).

Almost surely, 2^12111231013 is an apocalyptic number.

It is an amenable number.

12111231013 is a deficient number, since it is larger than the sum of its proper divisors (1731609115).

12111231013 is a wasteful number, since it uses less digits than its factorization.

12111231013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179163.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12111231013 its reverse (31013211121), we get a palindrome (43124442134).

The spelling of 12111231013 in words is "twelve billion, one hundred eleven million, two hundred thirty-one thousand, thirteen".