444352112021 has 16 divisors (see below), whose sum is σ = 461229170688. Its totient is φ = 427776174000.

The previous prime is 444352111999. The next prime is 444352112053. The reversal of 444352112021 is 120211253444.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 444352112021 - 2¹⁰ = 444352110997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444352112221) 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, 10991996 + ... + 11032346.

It is an arithmetic number, because the mean of its divisors is an integer number (28826823168).

Almost surely, 2^444352112021 is an apocalyptic number.

It is an amenable number.

444352112021 is a deficient number, since it is larger than the sum of its proper divisors (16877058667).

444352112021 is a wasteful number, since it uses less digits than its factorization.

444352112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44072.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 444352112021 its reverse (120211253444), we get a palindrome (564563365465).

The spelling of 444352112021 in words is "four hundred forty-four billion, three hundred fifty-two million, one hundred twelve thousand, twenty-one".