162021 has 8 divisors (see below), whose sum is σ = 220320. Its totient is φ = 105872.

The previous prime is 162017. The next prime is 162053. The reversal of 162021 is 120261.

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

It is a cyclic number.

It is not a de Polignac number, because 162021 - 2² = 162017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161988 and 162006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351 + ... + 668.

It is an arithmetic number, because the mean of its divisors is an integer number (27540).

2¹⁶²⁰²¹ is an apocalyptic number.

It is an amenable number.

162021 is a deficient number, since it is larger than the sum of its proper divisors (58299).

162021 is a wasteful number, since it uses less digits than its factorization.

162021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 162021 is about 402.5183225643. The cubic root of 162021 is about 54.5159732099.

Adding to 162021 its reverse (120261), we get a palindrome (282282).

The spelling of 162021 in words is "one hundred sixty-two thousand, twenty-one".