121133320 has 128 divisors (see below), whose sum is σ = 345461760. Its totient is φ = 37128960.

The previous prime is 121133317. The next prime is 121133321. The reversal of 121133320 is 23331121.

It is a junction number, because it is equal to n+sod(n) for n = 121133294 and 121133303.

It is not an unprimeable number, because it can be changed into a prime (121133321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206067 + ... + 206653.

It is an arithmetic number, because the mean of its divisors is an integer number (2698920).

Almost surely, 2^121133320 is an apocalyptic number.

121133320 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 121133320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172730880).

121133320 is an abundant number, since it is smaller than the sum of its proper divisors (224328440).

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

121133320 is a wasteful number, since it uses less digits than its factorization.

121133320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 121133320 is about 11006.0583316644. The cubic root of 121133320 is about 494.7903339507.

Adding to 121133320 its reverse (23331121), we get a palindrome (144464441).

The spelling of 121133320 in words is "one hundred twenty-one million, one hundred thirty-three thousand, three hundred twenty".