121320323332120 has 128 divisors (see below), whose sum is σ = 300907555490880. Its totient is φ = 43654567680000.

The previous prime is 121320323332111. The next prime is 121320323332133. The reversal of 121320323332120 is 21233323023121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76586014 + ... + 78154066.

Almost surely, 2^{121320323332120} is an apocalyptic number.

121320323332120 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 121320323332120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150453777745440).

121320323332120 is an abundant number, since it is smaller than the sum of its proper divisors (179587232158760).

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

121320323332120 is a wasteful number, since it uses less digits than its factorization.

121320323332120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569917 (or 1569913 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 121320323332120 its reverse (21233323023121), we get a palindrome (142553646355241).

The spelling of 121320323332120 in words is "one hundred twenty-one trillion, three hundred twenty billion, three hundred twenty-three million, three hundred thirty-two thousand, one hundred twenty".