10021044440 has 32 divisors (see below), whose sum is σ = 24597110160. Its totient is φ = 3644016000.

The previous prime is 10021044431. The next prime is 10021044461. The reversal of 10021044440 is 4444012001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 11387111 + ... + 11387990.

Almost surely, 2^10021044440 is an apocalyptic number.

10021044440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021044440 is an abundant number, since it is smaller than the sum of its proper divisors (14576065720).

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

10021044440 is a wasteful number, since it uses less digits than its factorization.

10021044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22775123 (or 22775119 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 10021044440 its reverse (4444012001), we get a palindrome (14465056441).

The spelling of 10021044440 in words is "ten billion, twenty-one million, forty-four thousand, four hundred forty".