12340221400 has 48 divisors (see below), whose sum is σ = 30898022400. Its totient is φ = 4556388480.

The previous prime is 12340221373. The next prime is 12340221431. The reversal of 12340221400 is 412204321.

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, 2370520 + ... + 2375719.

It is an arithmetic number, because the mean of its divisors is an integer number (643708800).

Almost surely, 2^12340221400 is an apocalyptic number.

12340221400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12340221400 is an abundant number, since it is smaller than the sum of its proper divisors (18557801000).

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

12340221400 is a wasteful number, since it uses less digits than its factorization.

12340221400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4746268 (or 4746259 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12340221400 its reverse (412204321), we get a palindrome (12752425721).

The spelling of 12340221400 in words is "twelve billion, three hundred forty million, two hundred twenty-one thousand, four hundred".