161233222 has 8 divisors (see below), whose sum is σ = 245459736. Its totient is φ = 79413312.

The previous prime is 161233217. The next prime is 161233249. The reversal of 161233222 is 222332161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 161233193 and 161233202.

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 in 3 ways as a sum of consecutive naturals, for example, 601483 + ... + 601750.

It is an arithmetic number, because the mean of its divisors is an integer number (30682467).

Almost surely, 2^161233222 is an apocalyptic number.

161233222 is a deficient number, since it is larger than the sum of its proper divisors (84226514).

161233222 is a wasteful number, since it uses less digits than its factorization.

161233222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203302.

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

The square root of 161233222 is about 12697.7644489099. The cubic root of 161233222 is about 544.2747382251.

Adding to 161233222 its reverse (222332161), we get a palindrome (383565383).

The spelling of 161233222 in words is "one hundred sixty-one million, two hundred thirty-three thousand, two hundred twenty-two".