161222163 has 16 divisors (see below), whose sum is σ = 226913280. Its totient is φ = 101538144.

The previous prime is 161222153. The next prime is 161222177. The reversal of 161222163 is 361222161.

It is not a de Polignac number, because 161222163 - 2¹⁶ = 161156627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161222123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17470 + ... + 25052.

It is an arithmetic number, because the mean of its divisors is an integer number (14182080).

Almost surely, 2^161222163 is an apocalyptic number.

161222163 is a deficient number, since it is larger than the sum of its proper divisors (65691117).

161222163 is a wasteful number, since it uses less digits than its factorization.

161222163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7978.

The product of its digits is 864, while the sum is 24.

The square root of 161222163 is about 12697.3289710868. The cubic root of 161222163 is about 544.2622939908.

The spelling of 161222163 in words is "one hundred sixty-one million, two hundred twenty-two thousand, one hundred sixty-three".