121324242200 has 96 divisors (see below), whose sum is σ = 323073845760. Its totient is φ = 41506819200.

The previous prime is 121324242121. The next prime is 121324242203. The reversal of 121324242200 is 2242423121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121324242203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554615 + ... + 741785.

It is an arithmetic number, because the mean of its divisors is an integer number (3365352560).

Almost surely, 2^121324242200 is an apocalyptic number.

121324242200 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 121324242200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161536922880).

121324242200 is an abundant number, since it is smaller than the sum of its proper divisors (201749603560).

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

121324242200 is a wasteful number, since it uses less digits than its factorization.

121324242200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187657 (or 187648 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 121324242200 its reverse (2242423121), we get a palindrome (123566665321).

The spelling of 121324242200 in words is "one hundred twenty-one billion, three hundred twenty-four million, two hundred forty-two thousand, two hundred".