21010244032 has 14 divisors (see below), whose sum is σ = 41692203128. Its totient is φ = 10505121984.

The previous prime is 21010244027. The next prime is 21010244071. The reversal of 21010244032 is 23044201012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164142468 + ... + 164142595.

Almost surely, 2^21010244032 is an apocalyptic number.

It is an amenable number.

21010244032 is a deficient number, since it is larger than the sum of its proper divisors (20681959096).

21010244032 is an equidigital number, since it uses as much as digits as its factorization.

21010244032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328285075 (or 328285065 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21010244032 its reverse (23044201012), we get a palindrome (44054445044).

The spelling of 21010244032 in words is "twenty-one billion, ten million, two hundred forty-four thousand, thirty-two".