121212133201312 has 24 divisors (see below), whose sum is σ = 240458039059392. Its totient is φ = 60143424868800.

The previous prime is 121212133201303. The next prime is 121212133201319. The reversal of 121212133201312 is 213102331212121.

It is not an unprimeable number, because it can be changed into a prime (121212133201319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14457549864 + ... + 14457558247.

It is an arithmetic number, because the mean of its divisors is an integer number (10019084960808).

Almost surely, 2^{121212133201312} is an apocalyptic number.

It is an amenable number.

121212133201312 is a deficient number, since it is larger than the sum of its proper divisors (119245905858080).

121212133201312 is a wasteful number, since it uses less digits than its factorization.

121212133201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28915108252 (or 28915108244 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 121212133201312 its reverse (213102331212121), we get a palindrome (334314464413433).

The spelling of 121212133201312 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred thirty-three million, two hundred one thousand, three hundred twelve".