422400402221 has 16 divisors (see below), whose sum is σ = 483377157120. Its totient is φ = 361582341120.

The previous prime is 422400402199. The next prime is 422400402227. The reversal of 422400402221 is 122204004224.

It is not a de Polignac number, because 422400402221 - 2¹⁴ = 422400385837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422400402227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29745695 + ... + 29759891.

It is an arithmetic number, because the mean of its divisors is an integer number (30211072320).

Almost surely, 2^422400402221 is an apocalyptic number.

It is an amenable number.

422400402221 is a deficient number, since it is larger than the sum of its proper divisors (60976754899).

422400402221 is a wasteful number, since it uses less digits than its factorization.

422400402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19484.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 422400402221 its reverse (122204004224), we get a palindrome (544604406445).

The spelling of 422400402221 in words is "four hundred twenty-two billion, four hundred million, four hundred two thousand, two hundred twenty-one".