121603600 has 30 divisors (see below), whose sum is σ = 292153610. Its totient is φ = 48641280.

The previous prime is 121603597. The next prime is 121603609. The reversal of 121603600 is 6306121.

It can be written as a sum of positive squares in 3 ways, for example, as 1218816 + 120384784 = 1104^2 + 10972^2 .

It is not an unprimeable number, because it can be changed into a prime (121603609) 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 5 ways as a sum of consecutive naturals, for example, 151605 + ... + 152404.

Almost surely, 2^121603600 is an apocalyptic number.

121603600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121603600 is an abundant number, since it is smaller than the sum of its proper divisors (170550010).

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

121603600 is a wasteful number, since it uses less digits than its factorization.

121603600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304027 (or 304016 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 121603600 is about 11027.4022326203. The cubic root of 121603600 is about 495.4298208656.

Adding to 121603600 its reverse (6306121), we get a palindrome (127909721).

The spelling of 121603600 in words is "one hundred twenty-one million, six hundred three thousand, six hundred".