121333320 has 192 divisors, whose sum is σ = 412439040. Its totient is φ = 30912000.

The previous prime is 121333319. The next prime is 121333327. The reversal of 121333320 is 23333121.

121333320 is a `hidden beast` number, since 12 + 1 + 333 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121333293 and 121333302.

It is not an unprimeable number, because it can be changed into a prime (121333327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1201270 + ... + 1201370.

It is an arithmetic number, because the mean of its divisors is an integer number (2148120).

Almost surely, 2^121333320 is an apocalyptic number.

121333320 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 121333320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206219520).

121333320 is an abundant number, since it is smaller than the sum of its proper divisors (291105720).

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

121333320 is a wasteful number, since it uses less digits than its factorization.

121333320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 121333320 is about 11015.1404893447. The cubic root of 121333320 is about 495.0624959354.

Adding to 121333320 its reverse (23333121), we get a palindrome (144666441).

The spelling of 121333320 in words is "one hundred twenty-one million, three hundred thirty-three thousand, three hundred twenty".