210100221000 has 96 divisors (see below), whose sum is σ = 710138777400. Its totient is φ = 56026723200.

The previous prime is 210100220999. The next prime is 210100221017. The reversal of 210100221000 is 122001012.

210100221000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19845483876 + 190254737124 = 140874^2 + 436182^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11663235 + ... + 11681234.

Almost surely, 2^210100221000 is an apocalyptic number.

210100221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210100221000 is an abundant number, since it is smaller than the sum of its proper divisors (500038556400).

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

210100221000 is a wasteful number, since it uses less digits than its factorization.

210100221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23344496 (or 23344479 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 210100221000 its reverse (122001012), we get a palindrome (210222222012).

The spelling of 210100221000 in words is "two hundred ten billion, one hundred million, two hundred twenty-one thousand".