121451200 has 84 divisors (see below), whose sum is σ = 321889120. Its totient is φ = 44835840.

The previous prime is 121451191. The next prime is 121451219. The reversal of 121451200 is 2154121.

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

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 11 ways as a sum of consecutive naturals, for example, 17881 + ... + 23719.

Almost surely, 2^121451200 is an apocalyptic number.

121451200 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 121451200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160944560).

121451200 is an abundant number, since it is smaller than the sum of its proper divisors (200437920).

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

121451200 is a wasteful number, since it uses less digits than its factorization.

121451200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5874 (or 5859 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 121451200 is about 11020.4900072547. The cubic root of 121451200 is about 495.2227681459. Note that the first 3 decimals are identical.

The spelling of 121451200 in words is "one hundred twenty-one million, four hundred fifty-one thousand, two hundred".