204421222124401 has 16 divisors (see below), whose sum is σ = 208463147133696. Its totient is φ = 200418854800896.

The previous prime is 204421222124351. The next prime is 204421222124419. The reversal of 204421222124401 is 104421222124402.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204421222124401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204421222125401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581017000 + ... + 581368726.

It is an arithmetic number, because the mean of its divisors is an integer number (13028946695856).

Almost surely, 2^{204421222124401} is an apocalyptic number.

It is an amenable number.

204421222124401 is a deficient number, since it is larger than the sum of its proper divisors (4041925009295).

204421222124401 is a wasteful number, since it uses less digits than its factorization.

204421222124401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407928.

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 204421222124401 its reverse (104421222124402), we get a palindrome (308842444248803).

Subtracting from 204421222124401 its reverse (104421222124402), we obtain a palindrome (99999999999999).

The spelling of 204421222124401 in words is "two hundred four trillion, four hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-four thousand, four hundred one".