444202221 has 16 divisors (see below), whose sum is σ = 597629120. Its totient is φ = 293466240.

The previous prime is 444202219. The next prime is 444202223. The reversal of 444202221 is 122202444.

It is an interprime number because it is at equal distance from previous prime (444202219) and next prime (444202223).

It is not a de Polignac number, because 444202221 - 2¹ = 444202219 is a prime.

It is a super-2 number, since 2×444202221² = 394631226282665682, 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 (444202223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198891 + ... + 201111.

It is an arithmetic number, because the mean of its divisors is an integer number (37351820).

Almost surely, 2^444202221 is an apocalyptic number.

It is an amenable number.

444202221 is a deficient number, since it is larger than the sum of its proper divisors (153426899).

444202221 is a wasteful number, since it uses less digits than its factorization.

444202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 444202221 is about 21076.1054514348. The cubic root of 444202221 is about 763.0041648618.

Adding to 444202221 its reverse (122202444), we get a palindrome (566404665).

The spelling of 444202221 in words is "four hundred forty-four million, two hundred two thousand, two hundred twenty-one".