12021200012 has 12 divisors (see below), whose sum is σ = 21125123040. Its totient is φ = 5985450576.

The previous prime is 12021199991. The next prime is 12021200017. The reversal of 12021200012 is 21000212021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12021199966 and 12021200002.

It is not an unprimeable number, because it can be changed into a prime (12021200017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6286283 + ... + 6288194.

It is an arithmetic number, because the mean of its divisors is an integer number (1760426920).

Almost surely, 2^12021200012 is an apocalyptic number.

It is an amenable number.

12021200012 is a deficient number, since it is larger than the sum of its proper divisors (9103923028).

12021200012 is a wasteful number, since it uses less digits than its factorization.

12021200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12574720 (or 12574718 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12021200012 its reverse (21000212021), we get a palindrome (33021412033).

The spelling of 12021200012 in words is "twelve billion, twenty-one million, two hundred thousand, twelve".