2200420561 has 4 divisors (see below), whose sum is σ = 2206226800. Its totient is φ = 2194614324.

The previous prime is 2200420489. The next prime is 2200420567. The reversal of 2200420561 is 1650240022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2200420561 - 2¹⁵ = 2200387793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2200420567) 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, 2902551 + ... + 2903308.

It is an arithmetic number, because the mean of its divisors is an integer number (551556700).

Almost surely, 2^2200420561 is an apocalyptic number.

It is an amenable number.

2200420561 is a deficient number, since it is larger than the sum of its proper divisors (5806239).

2200420561 is an equidigital number, since it uses as much as digits as its factorization.

2200420561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806238.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2200420561 is about 46908.6405793218. The cubic root of 2200420561 is about 1300.6743170315.

Adding to 2200420561 its reverse (1650240022), we get a palindrome (3850660583).

The spelling of 2200420561 in words is "two billion, two hundred million, four hundred twenty thousand, five hundred sixty-one".