21044410332 has 24 divisors (see below), whose sum is σ = 53567590272. Its totient is φ = 6377094000.

The previous prime is 21044410327. The next prime is 21044410351. The reversal of 21044410332 is 23301444012.

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 7 ways as a sum of consecutive naturals, for example, 79713544 + ... + 79713807.

It is an arithmetic number, because the mean of its divisors is an integer number (2231982928).

Almost surely, 2^21044410332 is an apocalyptic number.

21044410332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21044410332 is an abundant number, since it is smaller than the sum of its proper divisors (32523179940).

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

21044410332 is a wasteful number, since it uses less digits than its factorization.

21044410332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159427369 (or 159427367 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21044410332 its reverse (23301444012), we get a palindrome (44345854344).

The spelling of 21044410332 in words is "twenty-one billion, forty-four million, four hundred ten thousand, three hundred thirty-two".