12123013011 has 16 divisors (see below), whose sum is σ = 16222617600. Its totient is φ = 8052749568.

The previous prime is 12123012977. The next prime is 12123013051. The reversal of 12123013011 is 11031032121.

It is a happy number.

It is not a de Polignac number, because 12123013011 - 2²⁷ = 11988795283 is a prime.

It is a super-2 number, since 2×12123013011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12123013051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1403875 + ... + 1412483.

It is an arithmetic number, because the mean of its divisors is an integer number (1013913600).

Almost surely, 2^12123013011 is an apocalyptic number.

12123013011 is a deficient number, since it is larger than the sum of its proper divisors (4099604589).

12123013011 is a wasteful number, since it uses less digits than its factorization.

12123013011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10258.

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

Adding to 12123013011 its reverse (11031032121), we get a palindrome (23154045132).

The spelling of 12123013011 in words is "twelve billion, one hundred twenty-three million, thirteen thousand, eleven".