121103323120 has 80 divisors (see below), whose sum is σ = 303448515552. Its totient is φ = 44681978880.

The previous prime is 121103323087. The next prime is 121103323127. The reversal of 121103323120 is 21323301121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103323127) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1385515 + ... + 1470325.

Almost surely, 2^121103323120 is an apocalyptic number.

121103323120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121103323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151724257776).

121103323120 is an abundant number, since it is smaller than the sum of its proper divisors (182345192432).

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

121103323120 is a wasteful number, since it uses less digits than its factorization.

121103323120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86210 (or 86204 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121103323120 its reverse (21323301121), we get a palindrome (142426624241).

The spelling of 121103323120 in words is "one hundred twenty-one billion, one hundred three million, three hundred twenty-three thousand, one hundred twenty".