12123222004 has 24 divisors (see below), whose sum is σ = 22665577760. Its totient is φ = 5656866336.

The previous prime is 12123221983. The next prime is 12123222011. The reversal of 12123222004 is 40022232121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185327 + ... + 1195510.

Almost surely, 2^12123222004 is an apocalyptic number.

It is an amenable number.

12123222004 is a deficient number, since it is larger than the sum of its proper divisors (10542355756).

12123222004 is a wasteful number, since it uses less digits than its factorization.

12123222004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380927 (or 2380925 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12123222004 its reverse (40022232121), we get a palindrome (52145454125).

The spelling of 12123222004 in words is "twelve billion, one hundred twenty-three million, two hundred twenty-two thousand, four".