121454899200 has 546 divisors, whose sum is σ = 451828043084. Its totient is φ = 32368066560.

The previous prime is 121454899169. The next prime is 121454899309. The reversal of 121454899200 is 2998454121.

It is a happy number.

121454899200 is a `hidden beast` number, since 1 + 2 + 14 + 548 + 9 + 92 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 41 ways as a sum of consecutive naturals, for example, 74648787 + ... + 74650413.

Almost surely, 2^121454899200 is an apocalyptic number.

121454899200 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 121454899200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225914021542).

121454899200 is an abundant number, since it is smaller than the sum of its proper divisors (330373143884).

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

121454899200 is an frugal number, since it uses more digits than its factorization.

121454899200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 121454899200 in words is "one hundred twenty-one billion, four hundred fifty-four million, eight hundred ninety-nine thousand, two hundred".