10221899100 has 144 divisors (see below), whose sum is σ = 33831168000. Its totient is φ = 2334309120.

The previous prime is 10221899099. The next prime is 10221899147. The reversal of 10221899100 is 199812201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4259701 + ... + 4262099.

Almost surely, 2^10221899100 is an apocalyptic number.

10221899100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10221899100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16915584000).

10221899100 is an abundant number, since it is smaller than the sum of its proper divisors (23609268900).

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

10221899100 is a wasteful number, since it uses less digits than its factorization.

10221899100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452 (or 4445 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 10221899100 in words is "ten billion, two hundred twenty-one million, eight hundred ninety-nine thousand, one hundred".