2444022221 has 8 divisors (see below), whose sum is σ = 2595209400. Its totient is φ = 2293659648.

The previous prime is 2444022209. The next prime is 2444022227. The reversal of 2444022221 is 1222204442.

2444022221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 224670121 + 2219352100 = 14989^2 + 47110^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2444022221 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 (2444022227) 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, 200036 + ... + 211901.

It is an arithmetic number, because the mean of its divisors is an integer number (324401175).

Almost surely, 2^2444022221 is an apocalyptic number.

It is an amenable number.

2444022221 is a deficient number, since it is larger than the sum of its proper divisors (151187179).

2444022221 is a wasteful number, since it uses less digits than its factorization.

2444022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412303.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2444022221 is about 49437.0531180814. The cubic root of 2444022221 is about 1347.0024430317.

Adding to 2444022221 its reverse (1222204442), we get a palindrome (3666226663).

The spelling of 2444022221 in words is "two billion, four hundred forty-four million, twenty-two thousand, two hundred twenty-one".