12213020423400 has 192 divisors, whose sum is σ = 39865899460800. Its totient is φ = 3084397056000.

The previous prime is 12213020423399. The next prime is 12213020423413. The reversal of 12213020423400 is 432402031221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35407770 + ... + 35751030.

It is an arithmetic number, because the mean of its divisors is an integer number (207634893025).

Almost surely, 2^{12213020423400} is an apocalyptic number.

12213020423400 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 12213020423400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19932949730400).

12213020423400 is an abundant number, since it is smaller than the sum of its proper divisors (27652879037400).

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

12213020423400 is a wasteful number, since it uses less digits than its factorization.

12213020423400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346420 (or 346411 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12213020423400 its reverse (432402031221), we get a palindrome (12645422454621).

The spelling of 12213020423400 in words is "twelve trillion, two hundred thirteen billion, twenty million, four hundred twenty-three thousand, four hundred".