2205022221 has 48 divisors (see below), whose sum is σ = 3361512960. Its totient is φ = 1390878720.

The previous prime is 2205022207. The next prime is 2205022231. The reversal of 2205022221 is 1222205022.

2205022221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2205022221 - 2¹⁷ = 2204891149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2205022194 and 2205022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205022201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4762236 + ... + 4762698.

It is an arithmetic number, because the mean of its divisors is an integer number (70031520).

Almost surely, 2^2205022221 is an apocalyptic number.

It is an amenable number.

2205022221 is a deficient number, since it is larger than the sum of its proper divisors (1156490739).

2205022221 is a wasteful number, since it uses less digits than its factorization.

2205022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2205022221 is about 46957.6641348353. The cubic root of 2205022221 is about 1301.5803701245.

Adding to 2205022221 its reverse (1222205022), we get a palindrome (3427227243).

The spelling of 2205022221 in words is "two billion, two hundred five million, twenty-two thousand, two hundred twenty-one".