21441020014 has 4 divisors (see below), whose sum is σ = 32161530024. Its totient is φ = 10720510006.

The previous prime is 21441019997. The next prime is 21441020047. The reversal of 21441020014 is 41002014412.

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

It is a junction number, because it is equal to n+sod(n) for n = 21441019973 and 21441020000.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5360255002 + ... + 5360255005.

It is an arithmetic number, because the mean of its divisors is an integer number (8040382506).

Almost surely, 2^21441020014 is an apocalyptic number.

21441020014 is a deficient number, since it is larger than the sum of its proper divisors (10720510010).

21441020014 is a wasteful number, since it uses less digits than its factorization.

21441020014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10720510009.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21441020014 its reverse (41002014412), we get a palindrome (62443034426).

The spelling of 21441020014 in words is "twenty-one billion, four hundred forty-one million, twenty thousand, fourteen".