21441022007 has 4 divisors (see below), whose sum is σ = 21441323736. Its totient is φ = 21440720280.

The previous prime is 21441021977. The next prime is 21441022019. The reversal of 21441022007 is 70022014412.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21441022007 - 2¹⁰ = 21441020983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441022067) 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, 20957 + ... + 208137.

It is an arithmetic number, because the mean of its divisors is an integer number (5360330934).

Almost surely, 2^21441022007 is an apocalyptic number.

21441022007 is a deficient number, since it is larger than the sum of its proper divisors (301729).

21441022007 is a wasteful number, since it uses less digits than its factorization.

21441022007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301728.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 21441022007 its reverse (70022014412), we get a palindrome (91463036419).

The spelling of 21441022007 in words is "twenty-one billion, four hundred forty-one million, twenty-two thousand, seven".