121213312312 has 32 divisors (see below), whose sum is σ = 227726536320. Its totient is φ = 60486323680.

The previous prime is 121213312301. The next prime is 121213312351. The reversal of 121213312312 is 213213312121.

121213312312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17444823 + ... + 17451769.

It is an arithmetic number, because the mean of its divisors is an integer number (7116454260).

Almost surely, 2^121213312312 is an apocalyptic number.

It is an amenable number.

121213312312 is a deficient number, since it is larger than the sum of its proper divisors (106513224008).

121213312312 is a wasteful number, since it uses less digits than its factorization.

121213312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10971 (or 10967 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 121213312312 its reverse (213213312121), we get a palindrome (334426624433).

The spelling of 121213312312 in words is "one hundred twenty-one billion, two hundred thirteen million, three hundred twelve thousand, three hundred twelve".