100001012200 has 24 divisors (see below), whose sum is σ = 232502353830. Its totient is φ = 40000404800.

The previous prime is 100001012171. The next prime is 100001012227. The reversal of 100001012200 is 2210100001.

It can be written as a sum of positive squares in 3 ways, for example, as 74663376516 + 25337635684 = 273246^2 + 159178^2 .

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, 250002331 + ... + 250002730.

Almost surely, 2^100001012200 is an apocalyptic number.

100001012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001012200 is an abundant number, since it is smaller than the sum of its proper divisors (132501341630).

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

100001012200 is a wasteful number, since it uses less digits than its factorization.

100001012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500005077 (or 500005068 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 100001012200 its reverse (2210100001), we get a palindrome (102211112201).

The spelling of 100001012200 in words is "one hundred billion, one million, twelve thousand, two hundred".