21342044332 has 48 divisors (see below), whose sum is σ = 43014021120. Its totient is φ = 9076132800.

The previous prime is 21342044323. The next prime is 21342044351. The reversal of 21342044332 is 23344024312.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 21342044332.

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, 2246769 + ... + 2256247.

It is an arithmetic number, because the mean of its divisors is an integer number (896125440).

Almost surely, 2^21342044332 is an apocalyptic number.

It is an amenable number.

21342044332 is an abundant number, since it is smaller than the sum of its proper divisors (21671976788).

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

21342044332 is a wasteful number, since it uses less digits than its factorization.

21342044332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102 (or 10100 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21342044332 its reverse (23344024312), we get a palindrome (44686068644).

It can be divided in two parts, 213420 and 44332, that added together give a palindrome (257752).

The spelling of 21342044332 in words is "twenty-one billion, three hundred forty-two million, forty-four thousand, three hundred thirty-two".