282160221 has 16 divisors (see below), whose sum is σ = 430729728. Its totient is φ = 160945200.

The previous prime is 282160217. The next prime is 282160231. The reversal of 282160221 is 122061282.

It is not a de Polignac number, because 282160221 - 2² = 282160217 is a prime.

It is a super-2 number, since 2×282160221² = 159228780629537682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 282160191 and 282160200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282160201) 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, 226 + ... + 23756.

It is an arithmetic number, because the mean of its divisors is an integer number (26920608).

Almost surely, 2^282160221 is an apocalyptic number.

282160221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

282160221 is a deficient number, since it is larger than the sum of its proper divisors (148569507).

282160221 is a wasteful number, since it uses less digits than its factorization.

282160221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24112.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 282160221 is about 16797.6254571889. The cubic root of 282160221 is about 655.8913885784.

The spelling of 282160221 in words is "two hundred eighty-two million, one hundred sixty thousand, two hundred twenty-one".