221400104422 has 40 divisors (see below), whose sum is σ = 397898452656. Its totient is φ = 92321204976.

The previous prime is 221400104417. The next prime is 221400104479. The reversal of 221400104422 is 224401004122.

It is a junction number, because it is equal to n+sod(n) for n = 221400104393 and 221400104402.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 445378 + ... + 800725.

Almost surely, 2^221400104422 is an apocalyptic number.

221400104422 is a deficient number, since it is larger than the sum of its proper divisors (176498348234).

221400104422 is an equidigital number, since it uses as much as digits as its factorization.

221400104422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246170 (or 1246149 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 221400104422 its reverse (224401004122), we get a palindrome (445801108544).

The spelling of 221400104422 in words is "two hundred twenty-one billion, four hundred million, one hundred four thousand, four hundred twenty-two".