12322200400 has 120 divisors (see below), whose sum is σ = 30536489984. Its totient is φ = 4775500800.

The previous prime is 12322200379. The next prime is 12322200409. The reversal of 12322200400 is 400222321.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12322200409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2181580 + ... + 2187220.

Almost surely, 2^12322200400 is an apocalyptic number.

12322200400 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 12322200400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15268244992).

12322200400 is an abundant number, since it is smaller than the sum of its proper divisors (18214289584).

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

12322200400 is a wasteful number, since it uses less digits than its factorization.

12322200400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5829 (or 5818 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 12322200400 its reverse (400222321), we get a palindrome (12722422721).

The spelling of 12322200400 in words is "twelve billion, three hundred twenty-two million, two hundred thousand, four hundred".