210001001100 has 288 divisors, whose sum is σ = 676976004096. Its totient is φ = 49833273600.

The previous prime is 210001001083. The next prime is 210001001131. The reversal of 210001001100 is 1100100012.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36036387 + ... + 36042213.

Almost surely, 2^210001001100 is an apocalyptic number.

210001001100 is a gapful number since it is divisible by the number (20) 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 210001001100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338488002048).

210001001100 is an abundant number, since it is smaller than the sum of its proper divisors (466975002996).

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

210001001100 is a wasteful number, since it uses less digits than its factorization.

210001001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6085 (or 6078 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 210001001100 its reverse (1100100012), we get a palindrome (211101101112).

The spelling of 210001001100 in words is "two hundred ten billion, one million, one thousand, one hundred".