12121343200 has 36 divisors (see below), whose sum is σ = 29591231040. Its totient is φ = 4848536960.

The previous prime is 12121343119. The next prime is 12121343203. The reversal of 12121343200 is 234312121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121343203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7575040 + ... + 7576639.

It is an arithmetic number, because the mean of its divisors is an integer number (821978640).

Almost surely, 2^12121343200 is an apocalyptic number.

12121343200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121343200 is an abundant number, since it is smaller than the sum of its proper divisors (17469887840).

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

12121343200 is a wasteful number, since it uses less digits than its factorization.

12121343200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15151699 (or 15151686 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12121343200 its reverse (234312121), we get a palindrome (12355655321).

The spelling of 12121343200 in words is "twelve billion, one hundred twenty-one million, three hundred forty-three thousand, two hundred".