121203360 has 144 divisors (see below), whose sum is σ = 419635944. Its totient is φ = 31850496.

The previous prime is 121203359. The next prime is 121203367. The reversal of 121203360 is 63302121.

It can be written as a sum of positive squares in 4 ways, for example, as 112275216 + 8928144 = 10596^2 + 2988^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

It is not an unprimeable number, because it can be changed into a prime (121203367) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 104544 + ... + 105696.

Almost surely, 2^121203360 is an apocalyptic number.

121203360 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 121203360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209817972).

121203360 is an abundant number, since it is smaller than the sum of its proper divisors (298432584).

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

121203360 is a wasteful number, since it uses less digits than its factorization.

121203360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 121203360 is about 11009.2397557688. The cubic root of 121203360 is about 494.8856791397.

Adding to 121203360 its reverse (63302121), we get a palindrome (184505481).

The spelling of 121203360 in words is "one hundred twenty-one million, two hundred three thousand, three hundred sixty".