402223324221 has 24 divisors (see below), whose sum is σ = 595611656640. Its totient is φ = 261410011200.

The previous prime is 402223324193. The next prime is 402223324241. The reversal of 402223324221 is 122423322204.

402223324221 is a `hidden beast` number, since 4 + 0 + 2 + 2 + 233 + 2 + 422 + 1 = 666.

It is not a de Polignac number, because 402223324221 - 2⁷ = 402223324093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402223324241) 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, 73506 + ... + 899916.

It is an arithmetic number, because the mean of its divisors is an integer number (24817152360).

Almost surely, 2^402223324221 is an apocalyptic number.

402223324221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

402223324221 is a deficient number, since it is larger than the sum of its proper divisors (193388332419).

402223324221 is a wasteful number, since it uses less digits than its factorization.

402223324221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827777 (or 827774 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 402223324221 its reverse (122423322204), we get a palindrome (524646646425).

The spelling of 402223324221 in words is "four hundred two billion, two hundred twenty-three million, three hundred twenty-four thousand, two hundred twenty-one".