10444420221 has 16 divisors (see below), whose sum is σ = 14664693120. Its totient is φ = 6599102400.

The previous prime is 10444420219. The next prime is 10444420243. The reversal of 10444420221 is 12202444401.

It is not a de Polignac number, because 10444420221 - 2¹ = 10444420219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10444420191 and 10444420200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10444420621) 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, 686830 + ... + 701871.

It is an arithmetic number, because the mean of its divisors is an integer number (916543320).

Almost surely, 2^10444420221 is an apocalyptic number.

It is an amenable number.

10444420221 is a deficient number, since it is larger than the sum of its proper divisors (4220272899).

10444420221 is a wasteful number, since it uses less digits than its factorization.

10444420221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388836.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 10444420221 its reverse (12202444401), we get a palindrome (22646864622).

The spelling of 10444420221 in words is "ten billion, four hundred forty-four million, four hundred twenty thousand, two hundred twenty-one".