12123322113 has 24 divisors (see below), whose sum is σ = 18807716352. Its totient is φ = 6926066784.

The previous prime is 12123322111. The next prime is 12123322121. The reversal of 12123322113 is 31122332121.

It is not a de Polignac number, because 12123322113 - 2¹ = 12123322111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12123322113.

It is not an unprimeable number, because it can be changed into a prime (12123322111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1129056 + ... + 1139742.

It is an arithmetic number, because the mean of its divisors is an integer number (783654848).

Almost surely, 2^12123322113 is an apocalyptic number.

It is an amenable number.

12123322113 is a deficient number, since it is larger than the sum of its proper divisors (6684394239).

12123322113 is a wasteful number, since it uses less digits than its factorization.

12123322113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18421 (or 18414 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 12123322113 its reverse (31122332121), we get a palindrome (43245654234).

The spelling of 12123322113 in words is "twelve billion, one hundred twenty-three million, three hundred twenty-two thousand, one hundred thirteen".