160071221 has 4 divisors (see below), whose sum is σ = 160230252. Its totient is φ = 159912192.

The previous prime is 160071203. The next prime is 160071239. The reversal of 160071221 is 122170061.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (160071203) and next prime (160071239).

It can be written as a sum of positive squares in 2 ways, for example, as 33756100 + 126315121 = 5810^2 + 11239^2 .

It is a cyclic number.

It is not a de Polignac number, because 160071221 - 2⁶ = 160071157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 160071193 and 160071202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160071721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77996 + ... + 80021.

It is an arithmetic number, because the mean of its divisors is an integer number (40057563).

Almost surely, 2^160071221 is an apocalyptic number.

It is an amenable number.

160071221 is a deficient number, since it is larger than the sum of its proper divisors (159031).

160071221 is a wasteful number, since it uses less digits than its factorization.

160071221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159030.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 160071221 is about 12651.9255846689. The cubic root of 160071221 is about 542.9640628437.

The spelling of 160071221 in words is "one hundred sixty million, seventy-one thousand, two hundred twenty-one".