21341443422 has 32 divisors (see below), whose sum is σ = 45977708448. Its totient is φ = 6564951936.

The previous prime is 21341443393. The next prime is 21341443423. The reversal of 21341443422 is 22434414312.

It is a self number, because there is not a number n which added to its sum of digits gives 21341443422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341443423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299568 + ... + 363900.

It is an arithmetic number, because the mean of its divisors is an integer number (1436803389).

Almost surely, 2^21341443422 is an apocalyptic number.

21341443422 is an abundant number, since it is smaller than the sum of its proper divisors (24636265026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21341443422 is a wasteful number, since it uses less digits than its factorization.

21341443422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68604.

The product of its digits is 18432, while the sum is 30.

Adding to 21341443422 its reverse (22434414312), we get a palindrome (43775857734).

The spelling of 21341443422 in words is "twenty-one billion, three hundred forty-one million, four hundred forty-three thousand, four hundred twenty-two".