21344203322 has 32 divisors (see below), whose sum is σ = 35557522560. Its totient is φ = 9547755840.

The previous prime is 21344203313. The next prime is 21344203327. The reversal of 21344203322 is 22330244312.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 21344203291 and 21344203300.

It is not an unprimeable number, because it can be changed into a prime (21344203327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10928 + ... + 206900.

It is an arithmetic number, because the mean of its divisors is an integer number (1111172580).

Almost surely, 2^21344203322 is an apocalyptic number.

21344203322 is a deficient number, since it is larger than the sum of its proper divisors (14213319238).

21344203322 is a wasteful number, since it uses less digits than its factorization.

21344203322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196118.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21344203322 its reverse (22330244312), we get a palindrome (43674447634).

The spelling of 21344203322 in words is "twenty-one billion, three hundred forty-four million, two hundred three thousand, three hundred twenty-two".