444021110021 has 16 divisors (see below), whose sum is σ = 452080901376. Its totient is φ = 436013760000.

The previous prime is 444021109999. The next prime is 444021110023. The reversal of 444021110021 is 120011120444.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444021110021 is a prime.

It is a super-2 number, since 2×444021110021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 444021109975 and 444021110002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444021110023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30486581 + ... + 30501141.

It is an arithmetic number, because the mean of its divisors is an integer number (28255056336).

Almost surely, 2^444021110021 is an apocalyptic number.

It is an amenable number.

444021110021 is a deficient number, since it is larger than the sum of its proper divisors (8059791355).

444021110021 is a wasteful number, since it uses less digits than its factorization.

444021110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16324.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 444021110021 its reverse (120011120444), we get a palindrome (564032230465).

The spelling of 444021110021 in words is "four hundred forty-four billion, twenty-one million, one hundred ten thousand, twenty-one".