121331300 has 72 divisors (see below), whose sum is σ = 273310632. Its totient is φ = 46720000.

The previous prime is 121331269. The next prime is 121331333. The reversal of 121331300 is 3133121.

It can be written as a sum of positive squares in 12 ways, for example, as 7311616 + 114019684 = 2704^2 + 10678^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413954 + ... + 414246.

It is an arithmetic number, because the mean of its divisors is an integer number (3795981).

Almost surely, 2^121331300 is an apocalyptic number.

121331300 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 121331300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136655316).

121331300 is an abundant number, since it is smaller than the sum of its proper divisors (151979332).

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

121331300 is a wasteful number, since it uses less digits than its factorization.

121331300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 121331300 is about 11015.0487969868. The cubic root of 121331300 is about 495.0597485950.

Adding to 121331300 its reverse (3133121), we get a palindrome (124464421).

The spelling of 121331300 in words is "one hundred twenty-one million, three hundred thirty-one thousand, three hundred".