21443424022 has 16 divisors (see below), whose sum is σ = 33105837744. Its totient is φ = 10410624000.

The previous prime is 21443423999. The next prime is 21443424043. The reversal of 21443424022 is 22042434412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602379 + ... + 636982.

It is an arithmetic number, because the mean of its divisors is an integer number (2069114859).

Almost surely, 2^21443424022 is an apocalyptic number.

21443424022 is a deficient number, since it is larger than the sum of its proper divisors (11662413722).

21443424022 is a wasteful number, since it uses less digits than its factorization.

21443424022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239615.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 21443424022 its reverse (22042434412), we get a palindrome (43485858434).

The spelling of 21443424022 in words is "twenty-one billion, four hundred forty-three million, four hundred twenty-four thousand, twenty-two".