122421231200 has 72 divisors (see below), whose sum is σ = 299162539872. Its totient is φ = 48919057920.

The previous prime is 122421231199. The next prime is 122421231217. The reversal of 122421231200 is 2132124221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 720857 + ... + 874343.

It is an arithmetic number, because the mean of its divisors is an integer number (4155035276).

Almost surely, 2^122421231200 is an apocalyptic number.

122421231200 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 122421231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149581269936).

122421231200 is an abundant number, since it is smaller than the sum of its proper divisors (176741308672).

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

122421231200 is a wasteful number, since it uses less digits than its factorization.

122421231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154504 (or 154491 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 122421231200 its reverse (2132124221), we get a palindrome (124553355421).

The spelling of 122421231200 in words is "one hundred twenty-two billion, four hundred twenty-one million, two hundred thirty-one thousand, two hundred".