10002100221988 has 24 divisors (see below), whose sum is σ = 20008917540864. Its totient is φ = 4285603574400.

The previous prime is 10002100221973. The next prime is 10002100222033. The reversal of 10002100221988 is 88912200120001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41996068 + ... + 42233563.

It is an arithmetic number, because the mean of its divisors is an integer number (833704897536).

Almost surely, 2^{10002100221988} is an apocalyptic number.

It is an amenable number.

10002100221988 is an abundant number, since it is smaller than the sum of its proper divisors (10006817318876).

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

10002100221988 is a wasteful number, since it uses less digits than its factorization.

10002100221988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84233883 (or 84233881 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

Adding to 10002100221988 its reverse (88912200120001), we get a palindrome (98914300341989).

The spelling of 10002100221988 in words is "ten trillion, two billion, one hundred million, two hundred twenty-one thousand, nine hundred eighty-eight".