12123313011 has 32 divisors (see below), whose sum is σ = 18200024640. Its totient is φ = 8074287360.

The previous prime is 12123312997. The next prime is 12123313031. The reversal of 12123313011 is 11031332121.

It is not a de Polignac number, because 12123313011 - 2⁹ = 12123312499 is a prime.

It is a super-2 number, since 2×12123313011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12123313031) 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, 2974471 + ... + 2978543.

It is an arithmetic number, because the mean of its divisors is an integer number (568750770).

Almost surely, 2^12123313011 is an apocalyptic number.

12123313011 is a deficient number, since it is larger than the sum of its proper divisors (6076711629).

12123313011 is an frugal number, since it uses more digits than its factorization.

12123313011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5455 (or 5437 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12123313011 its reverse (11031332121), we get a palindrome (23154645132).

The spelling of 12123313011 in words is "twelve billion, one hundred twenty-three million, three hundred thirteen thousand, eleven".