121333120 has 32 divisors (see below), whose sum is σ = 290063520. Its totient is φ = 48532992.

The previous prime is 121333111. The next prime is 121333139. The reversal of 121333120 is 21333121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 121333094 and 121333103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94152 + ... + 95431.

It is an arithmetic number, because the mean of its divisors is an integer number (9064485).

Almost surely, 2^121333120 is an apocalyptic number.

121333120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121333120 is an abundant number, since it is smaller than the sum of its proper divisors (168730400).

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

121333120 is an equidigital number, since it uses as much as digits as its factorization.

121333120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189602 (or 189590 counting only the distinct ones).

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

The square root of 121333120 is about 11015.1314109274. The cubic root of 121333120 is about 495.0622239229.

Adding to 121333120 its reverse (21333121), we get a palindrome (142666241).

Subtracting from 121333120 its reverse (21333121), we obtain a palindrome (99999999).

The spelling of 121333120 in words is "one hundred twenty-one million, three hundred thirty-three thousand, one hundred twenty".