12001123 has 8 divisors (see below), whose sum is σ = 12514176. Its totient is φ = 11496000.

The previous prime is 12001117. The next prime is 12001139. The reversal of 12001123 is 32110021.

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 12001123 - 2⁵ = 12001091 is a prime.

It is a super-2 number, since 2×12001123² = 288053906522258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001153) 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, 1215 + ... + 5047.

It is an arithmetic number, because the mean of its divisors is an integer number (1564272).

Almost surely, 2^12001123 is an apocalyptic number.

12001123 is a deficient number, since it is larger than the sum of its proper divisors (513053).

12001123 is a wasteful number, since it uses less digits than its factorization.

12001123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12001123 is about 3464.2637024338. The cubic root of 12001123 is about 228.9499900329.

Adding to 12001123 its reverse (32110021), we get a palindrome (44111144).

The spelling of 12001123 in words is "twelve million, one thousand, one hundred twenty-three".