2021512 has 16 divisors (see below), whose sum is σ = 3844800. Its totient is φ = 996240.

The previous prime is 2021507. The next prime is 2021519. The reversal of 2021512 is 2151202.

It is a super-2 number, since 2×2021512² = 8173021532288, which contains 22 as substring.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 2021492 and 2021501.

It is not an unprimeable number, because it can be changed into a prime (2021519) 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, 1212 + ... + 2347.

It is an arithmetic number, because the mean of its divisors is an integer number (240300).

2^2021512 is an apocalyptic number.

It is an amenable number.

2021512 is a deficient number, since it is larger than the sum of its proper divisors (1823288).

2021512 is a wasteful number, since it uses less digits than its factorization.

2021512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636 (or 3632 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2021512 is about 1421.7988605988. The cubic root of 2021512 is about 126.4422187123.

Adding to 2021512 its reverse (2151202), we get a palindrome (4172714).

The spelling of 2021512 in words is "two million, twenty-one thousand, five hundred twelve".