2022001 has 4 divisors (see below), whose sum is σ = 2026404. Its totient is φ = 2017600.

The previous prime is 2021959. The next prime is 2022011. The reversal of 2022001 is 1002202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 921600 + 1100401 = 960^2 + 1049^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022001 - 2⁹ = 2021489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2022011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420 + ... + 2461.

It is an arithmetic number, because the mean of its divisors is an integer number (506601).

2^2022001 is an apocalyptic number.

It is an amenable number.

2022001 is a deficient number, since it is larger than the sum of its proper divisors (4403).

2022001 is an equidigital number, since it uses as much as digits as its factorization.

2022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 2022001 is about 1421.9708154530. The cubic root of 2022001 is about 126.4524132696.

Adding to 2022001 its reverse (1002202), we get a palindrome (3024203).

The spelling of 2022001 in words is "two million, twenty-two thousand, one".