2200021 has 8 divisors (see below), whose sum is σ = 2350080. Its totient is φ = 2052288.

The previous prime is 2200013. The next prime is 2200031. The reversal of 2200021 is 1200022.

It is a happy number.

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 2200021 - 2³ = 2200013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2199977 and 2200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200031) 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, 1650 + ... + 2668.

It is an arithmetic number, because the mean of its divisors is an integer number (293760).

2^2200021 is an apocalyptic number.

It is an amenable number.

2200021 is a deficient number, since it is larger than the sum of its proper divisors (150059).

2200021 is a wasteful number, since it uses less digits than its factorization.

2200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163.

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

The square root of 2200021 is about 1483.2467765008. The cubic root of 2200021 is about 130.0595585084.

Adding to 2200021 its reverse (1200022), we get a palindrome (3400043).

Subtracting from 2200021 its reverse (1200022), we obtain a palindrome (999999).

The spelling of 2200021 in words is "two million, two hundred thousand, twenty-one".