2021019 has 32 divisors (see below), whose sum is σ = 3623424. Its totient is φ = 967680.

The previous prime is 2021017. The next prime is 2021029. The reversal of 2021019 is 9101202.

It is a happy number.

It is not a de Polignac number, because 2021019 - 2¹ = 2021017 is a prime.

It is a super-2 number, since 2×2021019² = 8169035596722, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2020989 and 2021007.

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 31 ways as a sum of consecutive naturals, for example, 2667 + ... + 3339.

It is an arithmetic number, because the mean of its divisors is an integer number (113232).

2^2021019 is an apocalyptic number.

2021019 is a deficient number, since it is larger than the sum of its proper divisors (1602405).

2021019 is a wasteful number, since it uses less digits than its factorization.

2021019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2021019 is about 1421.6254781060. The cubic root of 2021019 is about 126.4319390995.

Adding to 2021019 its product of nonzero digits (36), we get a triangular number (2021055 = T₂₀₁₀).

It can be divided in two parts, 202 and 1019, that added together give a palindrome (1221).

The spelling of 2021019 in words is "two million, twenty-one thousand, nineteen".