21344020022 has 16 divisors (see below), whose sum is σ = 35410662672. Its totient is φ = 9584840160.

The previous prime is 21344020007. The next prime is 21344020067. The reversal of 21344020022 is 22002044312.

It is a junction number, because it is equal to n+sod(n) for n = 21344019976 and 21344020003.

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 in 7 ways as a sum of consecutive naturals, for example, 11092604 + ... + 11094527.

It is an arithmetic number, because the mean of its divisors is an integer number (2213166417).

Almost surely, 2^21344020022 is an apocalyptic number.

21344020022 is a deficient number, since it is larger than the sum of its proper divisors (14066642650).

21344020022 is a wasteful number, since it uses less digits than its factorization.

21344020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22187183.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21344020022 its reverse (22002044312), we get a palindrome (43346064334).

The spelling of 21344020022 in words is "twenty-one billion, three hundred forty-four million, twenty thousand, twenty-two".