121995300 has 216 divisors, whose sum is σ = 422327136. Its totient is φ = 27095040.

The previous prime is 121995299. The next prime is 121995317. The reversal of 121995300 is 3599121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 632004 + ... + 632196.

Almost surely, 2^121995300 is an apocalyptic number.

121995300 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 121995300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211163568).

121995300 is an abundant number, since it is smaller than the sum of its proper divisors (300331836).

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

121995300 is a wasteful number, since it uses less digits than its factorization.

121995300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 121995300 is about 11045.1482561349. The cubic root of 121995300 is about 495.9611973200.

The spelling of 121995300 in words is "one hundred twenty-one million, nine hundred ninety-five thousand, three hundred".