161022322 has 8 divisors (see below), whose sum is σ = 242474076. Its totient is φ = 80197632.

The previous prime is 161022313. The next prime is 161022343. The reversal of 161022322 is 223220161.

It can be written as a sum of positive squares in 2 ways, for example, as 157778721 + 3243601 = 12561^2 + 1801^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 161022322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156123 + ... + 157150.

Almost surely, 2^161022322 is an apocalyptic number.

161022322 is a deficient number, since it is larger than the sum of its proper divisors (81451754).

161022322 is a wasteful number, since it uses less digits than its factorization.

161022322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313532.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 161022322 is about 12689.4571199874. The cubic root of 161022322 is about 544.0373230772.

Adding to 161022322 its reverse (223220161), we get a palindrome (384242483).

It can be divided in two parts, 1610 and 22322, that added together give a palindrome (23932).

The spelling of 161022322 in words is "one hundred sixty-one million, twenty-two thousand, three hundred twenty-two".