201000000100 has 18 divisors (see below), whose sum is σ = 436170000434. Its totient is φ = 80400000000.

The previous prime is 201000000079. The next prime is 201000000127. The reversal of 201000000100 is 1000000102.

It can be written as a sum of positive squares in 3 ways, for example, as 43314766884 + 157685233216 = 208122^2 + 397096^2 .

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a self number, because there is not a number n which added to its sum of digits gives 201000000100.

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 5 ways as a sum of consecutive naturals, for example, 1004999901 + ... + 1005000100.

Almost surely, 2^201000000100 is an apocalyptic number.

201000000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201000000100 is an abundant number, since it is smaller than the sum of its proper divisors (235170000334).

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

201000000100 is a wasteful number, since it uses less digits than its factorization.

201000000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010000015 (or 2010000008 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

Adding to 201000000100 its reverse (1000000102), we get a palindrome (202000000202).

The spelling of 201000000100 in words is "two hundred one billion, one hundred", and thus it is an aban number.