10221535516 has 12 divisors (see below), whose sum is σ = 18180928360. Its totient is φ = 5026984560.

The previous prime is 10221535487. The next prime is 10221535517. The reversal of 10221535516 is 61553512201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221535517) 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, 20945526 + ... + 20946013.

Almost surely, 2^10221535516 is an apocalyptic number.

It is an amenable number.

10221535516 is a deficient number, since it is larger than the sum of its proper divisors (7959392844).

10221535516 is a wasteful number, since it uses less digits than its factorization.

10221535516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41891604 (or 41891602 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

It can be divided in two parts, 102215 and 35516, that added together give a palindrome (137731).

The spelling of 10221535516 in words is "ten billion, two hundred twenty-one million, five hundred thirty-five thousand, five hundred sixteen".