10021000988 has 12 divisors (see below), whose sum is σ = 17545521000. Its totient is φ = 5007994992.

The previous prime is 10021000987. The next prime is 10021000991. The reversal of 10021000988 is 88900012001.

It is a super-2 number, since 2×10021000988² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10021000988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021000981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617363 + ... + 633386.

It is an arithmetic number, because the mean of its divisors is an integer number (1462126750).

Almost surely, 2^10021000988 is an apocalyptic number.

It is an amenable number.

10021000988 is a deficient number, since it is larger than the sum of its proper divisors (7524520012).

10021000988 is a wasteful number, since it uses less digits than its factorization.

10021000988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252756 (or 1252754 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

Adding to 10021000988 its reverse (88900012001), we get a palindrome (98921012989).

The spelling of 10021000988 in words is "ten billion, twenty-one million, nine hundred eighty-eight", and thus it is an aban number.