3111211213123 has 4 divisors (see below), whose sum is σ = 3350535152608. Its totient is φ = 2871887273640.

The previous prime is 3111211213109. The next prime is 3111211213139. The reversal of 3111211213123 is 3213121121113.

3111211213123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3111211213123 - 2²⁹ = 3110674342211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3111211213094 and 3111211213103.

It is not an unprimeable number, because it can be changed into a prime (3111211213183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119661969723 + ... + 119661969748.

It is an arithmetic number, because the mean of its divisors is an integer number (837633788152).

Almost surely, 2^{3111211213123} is an apocalyptic number.

3111211213123 is a deficient number, since it is larger than the sum of its proper divisors (239323939485).

3111211213123 is a wasteful number, since it uses less digits than its factorization.

3111211213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239323939484.

The product of its digits is 216, while the sum is 22.

Adding to 3111211213123 its reverse (3213121121113), we get a palindrome (6324332334236).

The spelling of 3111211213123 in words is "three trillion, one hundred eleven billion, two hundred eleven million, two hundred thirteen thousand, one hundred twenty-three".