12121104412 has 6 divisors (see below), whose sum is σ = 21211932728. Its totient is φ = 6060552204.

The previous prime is 12121104403. The next prime is 12121104419. The reversal of 12121104412 is 21440112121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12121104412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121104419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515138048 + ... + 1515138055.

Almost surely, 2^12121104412 is an apocalyptic number.

It is an amenable number.

12121104412 is a deficient number, since it is larger than the sum of its proper divisors (9090828316).

12121104412 is a wasteful number, since it uses less digits than its factorization.

12121104412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030276107 (or 3030276105 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12121104412 its reverse (21440112121), we get a palindrome (33561216533).

The spelling of 12121104412 in words is "twelve billion, one hundred twenty-one million, one hundred four thousand, four hundred twelve".