10003021056 has 108 divisors (see below), whose sum is σ = 32961396832. Its totient is φ = 2858001408.

The previous prime is 10003021033. The next prime is 10003021073. The reversal of 10003021056 is 65012030001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293986 + ... + 326241.

Almost surely, 2^10003021056 is an apocalyptic number.

10003021056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10003021056 is an abundant number, since it is smaller than the sum of its proper divisors (22958375776).

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

10003021056 is an equidigital number, since it uses as much as digits as its factorization.

10003021056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620256 (or 620239 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 10003021056 its reverse (65012030001), we get a palindrome (75015051057).

The spelling of 10003021056 in words is "ten billion, three million, twenty-one thousand, fifty-six".