10221021100 has 18 divisors (see below), whose sum is σ = 22179616004. Its totient is φ = 4088408400.

The previous prime is 10221021079. The next prime is 10221021119. The reversal of 10221021100 is 112012201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51105006 + ... + 51105205.

Almost surely, 2^10221021100 is an apocalyptic number.

10221021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221021100 is an abundant number, since it is smaller than the sum of its proper divisors (11958594904).

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

10221021100 is a wasteful number, since it uses less digits than its factorization.

10221021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102210225 (or 102210218 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10221021100 its reverse (112012201), we get a palindrome (10333033301).

The spelling of 10221021100 in words is "ten billion, two hundred twenty-one million, twenty-one thousand, one hundred".