21310244032 has 112 divisors (see below), whose sum is σ = 52845004800. Its totient is φ = 8283340800.

The previous prime is 21310243961. The next prime is 21310244047. The reversal of 21310244032 is 23044201312.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21310243994 and 21310244012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2207857 + ... + 2217487.

It is an arithmetic number, because the mean of its divisors is an integer number (471830400).

Almost surely, 2^21310244032 is an apocalyptic number.

21310244032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21310244032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26422502400).

21310244032 is an abundant number, since it is smaller than the sum of its proper divisors (31534760768).

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

21310244032 is a wasteful number, since it uses less digits than its factorization.

21310244032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110 (or 10100 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21310244032 its reverse (23044201312), we get a palindrome (44354445344).

The spelling of 21310244032 in words is "twenty-one billion, three hundred ten million, two hundred forty-four thousand, thirty-two".