10821100 has 18 divisors (see below), whose sum is σ = 23482004. Its totient is φ = 4328400.

The previous prime is 10821091. The next prime is 10821101. The reversal of 10821100 is 112801.

It is not an unprimeable number, because it can be changed into a prime (10821101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54006 + ... + 54205.

Almost surely, 2^10821100 is an apocalyptic number.

10821100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10821100 is an abundant number, since it is smaller than the sum of its proper divisors (12660904).

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

10821100 is a wasteful number, since it uses less digits than its factorization.

10821100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108225 (or 108218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 10821100 is about 3289.5440413528. The cubic root of 10821100 is about 221.1857463944.

Adding to 10821100 its reverse (112801), we get a palindrome (10933901).

The spelling of 10821100 in words is "ten million, eight hundred twenty-one thousand, one hundred".