2201200021 has 12 divisors (see below), whose sum is σ = 2326651020. Its totient is φ = 2080016960.

The previous prime is 2201200019. The next prime is 2201200033. The reversal of 2201200021 is 1200021022.

It can be written as a sum of positive squares in 2 ways, for example, as 1503500625 + 697699396 = 38775^2 + 26414^2 .

It is not a de Polignac number, because 2201200021 - 2¹ = 2201200019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201199980 and 2201200007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201200061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46881 + ... + 81241.

It is an arithmetic number, because the mean of its divisors is an integer number (193887585).

Almost surely, 2^2201200021 is an apocalyptic number.

It is an amenable number.

2201200021 is a deficient number, since it is larger than the sum of its proper divisors (125450999).

2201200021 is an equidigital number, since it uses as much as digits as its factorization.

2201200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34484 (or 34437 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2201200021 is about 46916.9481211214. The cubic root of 2201200021 is about 1300.8278791785.

Adding to 2201200021 its reverse (1200021022), we get a palindrome (3401221043).

The spelling of 2201200021 in words is "two billion, two hundred one million, two hundred thousand, twenty-one".