121212424312 has 32 divisors (see below), whose sum is σ = 259752222720. Its totient is φ = 51945919200.

The previous prime is 121212424189. The next prime is 121212424349. The reversal of 121212424312 is 213424212121.

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, 2187493 + ... + 2242219.

It is an arithmetic number, because the mean of its divisors is an integer number (8117256960).

Almost surely, 2^121212424312 is an apocalyptic number.

It is an amenable number.

121212424312 is an abundant number, since it is smaller than the sum of its proper divisors (138539798408).

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

121212424312 is a wasteful number, since it uses less digits than its factorization.

121212424312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94291 (or 94287 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

Adding to 121212424312 its reverse (213424212121), we get a palindrome (334636636433).

The spelling of 121212424312 in words is "one hundred twenty-one billion, two hundred twelve million, four hundred twenty-four thousand, three hundred twelve".