14004441021 has 4 divisors (see below), whose sum is σ = 18672588032. Its totient is φ = 9336294012.

The previous prime is 14004440981. The next prime is 14004441037. The reversal of 14004441021 is 12014440041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-14004441021 is a prime.

It is a super-2 number, since 2×14004441021² (a number of 21 digits) 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 (14004446021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2334073501 + ... + 2334073506.

It is an arithmetic number, because the mean of its divisors is an integer number (4668147008).

Almost surely, 2^14004441021 is an apocalyptic number.

It is an amenable number.

14004441021 is a deficient number, since it is larger than the sum of its proper divisors (4668147011).

14004441021 is an equidigital number, since it uses as much as digits as its factorization.

14004441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668147010.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 14004441021 its reverse (12014440041), we get a palindrome (26018881062).

The spelling of 14004441021 in words is "fourteen billion, four million, four hundred forty-one thousand, twenty-one".