10044401021 has 4 divisors (see below), whose sum is σ = 10046114844. Its totient is φ = 10042687200.

The previous prime is 10044400991. The next prime is 10044401033. The reversal of 10044401021 is 12010444001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4930005796 + 5114395225 = 70214^2 + 71515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10044401021 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 (10044401051) 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 3 ways as a sum of consecutive naturals, for example, 848090 + ... + 859851.

It is an arithmetic number, because the mean of its divisors is an integer number (2511528711).

Almost surely, 2^10044401021 is an apocalyptic number.

It is an amenable number.

10044401021 is a deficient number, since it is larger than the sum of its proper divisors (1713823).

10044401021 is an equidigital number, since it uses as much as digits as its factorization.

10044401021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713822.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10044401021 its reverse (12010444001), we get a palindrome (22054845022).

The spelling of 10044401021 in words is "ten billion, forty-four million, four hundred one thousand, twenty-one".