2244422221 has 4 divisors (see below), whose sum is σ = 2266212832. Its totient is φ = 2222631612.

The previous prime is 2244422197. The next prime is 2244422233. The reversal of 2244422221 is 1222244422.

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 2244422221 - 2¹⁹ = 2243897933 is a prime.

It is a super-2 number, since 2×2244422221² = 10074862212237145682, 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 (2244422021) 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, 10895151 + ... + 10895356.

It is an arithmetic number, because the mean of its divisors is an integer number (566553208).

Almost surely, 2^2244422221 is an apocalyptic number.

It is an amenable number.

2244422221 is a deficient number, since it is larger than the sum of its proper divisors (21790611).

2244422221 is a wasteful number, since it uses less digits than its factorization.

2244422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21790610.

The product of its digits is 4096, while the sum is 25.

The square root of 2244422221 is about 47375.3334658449. Note that the first 3 decimals coincide. The cubic root of 2244422221 is about 1309.2869924888.

Adding to 2244422221 its reverse (1222244422), we get a palindrome (3466666643).

The spelling of 2244422221 in words is "two billion, two hundred forty-four million, four hundred twenty-two thousand, two hundred twenty-one".