163321222 has 4 divisors (see below), whose sum is σ = 244981836. Its totient is φ = 81660610.

The previous prime is 163321199. The next prime is 163321231. The reversal of 163321222 is 222123361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222123361 = 109 ⋅2037829.

It is a junction number, because it is equal to n+sod(n) for n = 163321193 and 163321202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40830304 + ... + 40830307.

It is an arithmetic number, because the mean of its divisors is an integer number (61245459).

Almost surely, 2^163321222 is an apocalyptic number.

163321222 is a deficient number, since it is larger than the sum of its proper divisors (81660614).

163321222 is an equidigital number, since it uses as much as digits as its factorization.

163321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81660613.

The product of its digits is 864, while the sum is 22.

The square root of 163321222 is about 12779.7191674935. The cubic root of 163321222 is about 546.6141545997.

Adding to 163321222 its reverse (222123361), we get a palindrome (385444583).

The spelling of 163321222 in words is "one hundred sixty-three million, three hundred twenty-one thousand, two hundred twenty-two".