161371222 has 8 divisors (see below), whose sum is σ = 242661672. Its totient is φ = 80484000.

The previous prime is 161371211. The next prime is 161371253. The reversal of 161371222 is 222173161.

It is a happy number.

161371222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99804 + ... + 101407.

It is an arithmetic number, because the mean of its divisors is an integer number (30332709).

Almost surely, 2^161371222 is an apocalyptic number.

161371222 is a deficient number, since it is larger than the sum of its proper divisors (81290450).

161371222 is a wasteful number, since it uses less digits than its factorization.

161371222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201614.

The product of its digits is 1008, while the sum is 25.

The square root of 161371222 is about 12703.1973140623. The cubic root of 161371222 is about 544.4299760729.

The spelling of 161371222 in words is "one hundred sixty-one million, three hundred seventy-one thousand, two hundred twenty-two".