10191821100 has 36 divisors (see below), whose sum is σ = 29488336584. Its totient is φ = 2717818880.

The previous prime is 10191821099. The next prime is 10191821183. The reversal of 10191821100 is 112819101.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16986069 + ... + 16986668.

Almost surely, 2^10191821100 is an apocalyptic number.

10191821100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10191821100 is an abundant number, since it is smaller than the sum of its proper divisors (19296515484).

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

10191821100 is a wasteful number, since it uses less digits than its factorization.

10191821100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33972754 (or 33972747 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 10191821100 in words is "ten billion, one hundred ninety-one million, eight hundred twenty-one thousand, one hundred".