121548900 has 72 divisors (see below), whose sum is σ = 383662944. Its totient is φ = 29465600.

The previous prime is 121548883. The next prime is 121548901. The reversal of 121548900 is 9845121.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (121548901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15117 + ... + 21716.

It is an arithmetic number, because the mean of its divisors is an integer number (5328652).

Almost surely, 2^121548900 is an apocalyptic number.

121548900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121548900 is an abundant number, since it is smaller than the sum of its proper divisors (262114044).

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

121548900 is a wasteful number, since it uses less digits than its factorization.

121548900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36861 (or 36854 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 121548900 is about 11024.9217684299. The cubic root of 121548900 is about 495.3555246123.

The spelling of 121548900 in words is "one hundred twenty-one million, five hundred forty-eight thousand, nine hundred".