12121214204 has 36 divisors (see below), whose sum is σ = 23347312632. Its totient is φ = 5502198240.

The previous prime is 12121214201. The next prime is 12121214233. The reversal of 12121214204 is 40241212121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121214201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349847 + ... + 382929.

It is an arithmetic number, because the mean of its divisors is an integer number (648536462).

Almost surely, 2^12121214204 is an apocalyptic number.

It is an amenable number.

12121214204 is a deficient number, since it is larger than the sum of its proper divisors (11226098428).

12121214204 is a wasteful number, since it uses less digits than its factorization.

12121214204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33866 (or 33853 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12121214204 its reverse (40241212121), we get a palindrome (52362426325).

The spelling of 12121214204 in words is "twelve billion, one hundred twenty-one million, two hundred fourteen thousand, two hundred four".