2201102221 has 4 divisors (see below), whose sum is σ = 2203284700. Its totient is φ = 2198919744.

The previous prime is 2201102219. The next prime is 2201102249. The reversal of 2201102221 is 1222011022.

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 1096536996 + 1104565225 = 33114^2 + 33235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201102221 - 2¹ = 2201102219 is a prime.

It is a super-2 number, since 2×2201102221² = 9689701974582265682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201106221) 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, 1089726 + ... + 1091743.

It is an arithmetic number, because the mean of its divisors is an integer number (550821175).

Almost surely, 2^2201102221 is an apocalyptic number.

It is an amenable number.

2201102221 is a deficient number, since it is larger than the sum of its proper divisors (2182479).

2201102221 is a wasteful number, since it uses less digits than its factorization.

2201102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182478.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2201102221 is about 46915.9058422621. The cubic root of 2201102221 is about 1300.8086134978.

Adding to 2201102221 its reverse (1222011022), we get a palindrome (3423113243).

The spelling of 2201102221 in words is "two billion, two hundred one million, one hundred two thousand, two hundred twenty-one".