121121212120 has 32 divisors (see below), whose sum is σ = 273068910000. Its totient is φ = 48351385728.

The previous prime is 121121212099. The next prime is 121121212133. The reversal of 121121212120 is 21212121121.

121121212120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121121212094 and 121121212103.

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, 3014139 + ... + 3054058.

Almost surely, 2^121121212120 is an apocalyptic number.

121121212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121212120 is an abundant number, since it is smaller than the sum of its proper divisors (151947697880).

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

121121212120 is a wasteful number, since it uses less digits than its factorization.

121121212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6068707 (or 6068703 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121121212120 its reverse (21212121121), we get a palindrome (142333333241).

Subtracting from 121121212120 its reverse (21212121121), we obtain a palindrome (99909090999).

The spelling of 121121212120 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty".