2021016 has 32 divisors (see below), whose sum is σ = 5106240. Its totient is φ = 666528.

The previous prime is 2021009. The next prime is 2021017. The reversal of 2021016 is 6101202.

2021016 is nontrivially palindromic in base 9.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2020992 and 2021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021017) 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, 2175 + ... + 2961.

It is an arithmetic number, because the mean of its divisors is an integer number (159570).

2^2021016 is an apocalyptic number.

It is an amenable number.

2021016 is an abundant number, since it is smaller than the sum of its proper divisors (3085224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021016 is a wasteful number, since it uses less digits than its factorization.

2021016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 899 counting only the distinct ones).

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

The square root of 2021016 is about 1421.6244229754. The cubic root of 2021016 is about 126.4318765409.

Adding to 2021016 its reverse (6101202), we get a palindrome (8122218).

The spelling of 2021016 in words is "two million, twenty-one thousand, sixteen".