12222004400 has 30 divisors (see below), whose sum is σ = 29363366532. Its totient is φ = 4888801600.

The previous prime is 12222004387. The next prime is 12222004433. The reversal of 12222004400 is 440022221.

It is a happy 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 5 ways as a sum of consecutive naturals, for example, 15277106 + ... + 15277905.

Almost surely, 2^12222004400 is an apocalyptic number.

12222004400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222004400 is an abundant number, since it is smaller than the sum of its proper divisors (17141362132).

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

12222004400 is a wasteful number, since it uses less digits than its factorization.

12222004400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30555029 (or 30555018 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 12222004400 its reverse (440022221), we get a palindrome (12662026621).

The spelling of 12222004400 in words is "twelve billion, two hundred twenty-two million, four thousand, four hundred".