2244242221 has 8 divisors (see below), whose sum is σ = 2417244984. Its totient is φ = 2071292160.

The previous prime is 2244242207. The next prime is 2244242237. The reversal of 2244242221 is 1222424422.

It can be written as a sum of positive squares in 4 ways, for example, as 24890121 + 2219352100 = 4989^2 + 47110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2244242221 - 2¹³ = 2244234029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2244242281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152625 + ... + 166681.

It is an arithmetic number, because the mean of its divisors is an integer number (302155623).

Almost surely, 2^2244242221 is an apocalyptic number.

It is an amenable number.

2244242221 is a deficient number, since it is larger than the sum of its proper divisors (173002763).

2244242221 is a wasteful number, since it uses less digits than its factorization.

2244242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26351.

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

The square root of 2244242221 is about 47373.4337049786. The cubic root of 2244242221 is about 1309.2519904652.

Adding to 2244242221 its reverse (1222424422), we get a palindrome (3466666643).

The spelling of 2244242221 in words is "two billion, two hundred forty-four million, two hundred forty-two thousand, two hundred twenty-one".