12123303412 has 24 divisors (see below), whose sum is σ = 23147631360. Its totient is φ = 5509844160.

The previous prime is 12123303397. The next prime is 12123303443. The reversal of 12123303412 is 21430332121.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 429808 + ... + 457144.

It is an arithmetic number, because the mean of its divisors is an integer number (964484640).

Almost surely, 2^12123303412 is an apocalyptic number.

It is an amenable number.

12123303412 is a deficient number, since it is larger than the sum of its proper divisors (11024327948).

12123303412 is a wasteful number, since it uses less digits than its factorization.

12123303412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37431 (or 37429 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12123303412 its reverse (21430332121), we get a palindrome (33553635533).

The spelling of 12123303412 in words is "twelve billion, one hundred twenty-three million, three hundred three thousand, four hundred twelve".