121330200 has 192 divisors, whose sum is σ = 410688000. Its totient is φ = 29514240.

The previous prime is 121330177. The next prime is 121330201. The reversal of 121330200 is 2033121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121330201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 330417 + ... + 330783.

It is an arithmetic number, because the mean of its divisors is an integer number (2139000).

Almost surely, 2^121330200 is an apocalyptic number.

121330200 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 121330200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205344000).

121330200 is an abundant number, since it is smaller than the sum of its proper divisors (289357800).

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

121330200 is a wasteful number, since it uses less digits than its factorization.

121330200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 121330200 is about 11014.9988651838. The cubic root of 121330200 is about 495.0582525058.

Adding to 121330200 its reverse (2033121), we get a palindrome (123363321).

It can be divided in two parts, 1213 and 30200, that added together give a palindrome (31413).

The spelling of 121330200 in words is "one hundred twenty-one million, three hundred thirty thousand, two hundred".