121131300 has 72 divisors (see below), whose sum is σ = 352408000. Its totient is φ = 32123520.

The previous prime is 121131293. The next prime is 121131323. The reversal of 121131300 is 3131121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58686 + ... + 60714.

Almost surely, 2^121131300 is an apocalyptic number.

121131300 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 121131300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176204000).

121131300 is an abundant number, since it is smaller than the sum of its proper divisors (231276700).

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

121131300 is a wasteful number, since it uses less digits than its factorization.

121131300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 121131300 is about 11005.9665636417. The cubic root of 121131300 is about 494.7875835871.

Adding to 121131300 its reverse (3131121), we get a palindrome (124262421).

The spelling of 121131300 in words is "one hundred twenty-one million, one hundred thirty-one thousand, three hundred".