21344001322 has 32 divisors (see below), whose sum is σ = 36729912960. Its totient is φ = 9112443840.

The previous prime is 21344001299. The next prime is 21344001377. The reversal of 21344001322 is 22310044312.

It is a junction number, because it is equal to n+sod(n) for n = 21344001293 and 21344001302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5427697 + ... + 5431627.

It is an arithmetic number, because the mean of its divisors is an integer number (1147809780).

Almost surely, 2^21344001322 is an apocalyptic number.

21344001322 is a deficient number, since it is larger than the sum of its proper divisors (15385911638).

21344001322 is a wasteful number, since it uses less digits than its factorization.

21344001322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21344001322 its reverse (22310044312), we get a palindrome (43654045634).

Subtracting 21344001322 from its reverse (22310044312), we obtain a triangular number (966042990 = T₄₃₉₅₅).

The spelling of 21344001322 in words is "twenty-one billion, three hundred forty-four million, one thousand, three hundred twenty-two".