21344000222 has 32 divisors (see below), whose sum is σ = 32743920000. Its totient is φ = 10432551168.

The previous prime is 21344000219. The next prime is 21344000231. The reversal of 21344000222 is 22200044312.

It is a junction number, because it is equal to n+sod(n) for n = 21344000194 and 21344000203.

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 15 ways as a sum of consecutive naturals, for example, 7762904 + ... + 7765652.

It is an arithmetic number, because the mean of its divisors is an integer number (1023247500).

Almost surely, 2^21344000222 is an apocalyptic number.

21344000222 is a deficient number, since it is larger than the sum of its proper divisors (11399919778).

21344000222 is a wasteful number, since it uses less digits than its factorization.

21344000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300.

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

Adding to 21344000222 its reverse (22200044312), we get a palindrome (43544044534).

The spelling of 21344000222 in words is "twenty-one billion, three hundred forty-four million, two hundred twenty-two", and thus it is an aban number.