2200001 has 4 divisors (see below), whose sum is σ = 2230212. Its totient is φ = 2169792.

The previous prime is 2199979. The next prime is 2200013. The reversal of 2200001 is 1000022.

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 640000 + 1560001 = 800^2 + 1249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2200001 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 14996 + ... + 15141.

It is an arithmetic number, because the mean of its divisors is an integer number (557553).

2^2200001 is an apocalyptic number.

It is an amenable number.

2200001 is a deficient number, since it is larger than the sum of its proper divisors (30211).

2200001 is an equidigital number, since it uses as much as digits as its factorization.

2200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30210.

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 2200001 is about 1483.2400345190. The cubic root of 2200001 is about 130.0591643911.

Adding to 2200001 its reverse (1000022), we get a palindrome (3200023).

Multiplying 2200001 by its reverse (1000022), we get a palindrome (2200049400022).

The spelling of 2200001 in words is "two million, two hundred thousand, one".