121130200 has 48 divisors (see below), whose sum is σ = 285059880. Its totient is φ = 47861760.

The previous prime is 121130159. The next prime is 121130203. The reversal of 121130200 is 2031121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121130203) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12952 + ... + 20248.

Almost surely, 2^121130200 is an apocalyptic number.

121130200 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 121130200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142529940).

121130200 is an abundant number, since it is smaller than the sum of its proper divisors (163929680).

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

121130200 is a wasteful number, since it uses less digits than its factorization.

121130200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7396 (or 7387 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 121130200 is about 11005.9165906343. The cubic root of 121130200 is about 494.7860858515.

Adding to 121130200 its reverse (2031121), we get a palindrome (123161321).

It can be divided in two parts, 121 and 130200, that added together give a 4-th power (130321 = 19⁴).

The spelling of 121130200 in words is "one hundred twenty-one million, one hundred thirty thousand, two hundred".