121212110202112 has 72 divisors (see below), whose sum is σ = 258670347638976. Its totient is φ = 56487196778496.

The previous prime is 121212110202109. The next prime is 121212110202121. The reversal of 121212110202112 is 211202011212121.

It is a happy number.

121212110202112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 121212110202112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134755858 + ... + 135652369.

It is an arithmetic number, because the mean of its divisors is an integer number (3592643717208).

Almost surely, 2^{121212110202112} is an apocalyptic number.

It is an amenable number.

121212110202112 is an abundant number, since it is smaller than the sum of its proper divisors (137458237436864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121212110202112 is a wasteful number, since it uses less digits than its factorization.

121212110202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270408363 (or 270408349 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121212110202112 its reverse (211202011212121), we get a palindrome (332414121414233).

The spelling of 121212110202112 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred ten million, two hundred two thousand, one hundred twelve".