121811360 has 96 divisors (see below), whose sum is σ = 318935232. Its totient is φ = 43591680.

The previous prime is 121811359. The next prime is 121811419. The reversal of 121811360 is 63118121.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 117404 + ... + 118436.

It is an arithmetic number, because the mean of its divisors is an integer number (3322242).

Almost surely, 2^121811360 is an apocalyptic number.

121811360 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 121811360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159467616).

121811360 is an abundant number, since it is smaller than the sum of its proper divisors (197123872).

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

121811360 is a wasteful number, since it uses less digits than its factorization.

121811360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 121811360 is about 11036.8183821244. The cubic root of 121811360 is about 495.7118079564.

Adding to 121811360 its reverse (63118121), we get a palindrome (184929481).

The spelling of 121811360 in words is "one hundred twenty-one million, eight hundred eleven thousand, three hundred sixty".