20100101200 has 30 divisors (see below), whose sum is σ = 48290494094. Its totient is φ = 8040040320.

The previous prime is 20100101183. The next prime is 20100101201. The reversal of 20100101200 is 210100102.

It can be written as a sum of positive squares in 3 ways, for example, as 3069504 + 20097031696 = 1752^2 + 141764^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100101201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25124727 + ... + 25125526.

Almost surely, 2^20100101200 is an apocalyptic number.

20100101200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100101200 is an abundant number, since it is smaller than the sum of its proper divisors (28190392894).

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

20100101200 is a wasteful number, since it uses less digits than its factorization.

20100101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50250271 (or 50250260 counting only the distinct ones).

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

Adding to 20100101200 its reverse (210100102), we get a palindrome (20310201302).

The spelling of 20100101200 in words is "twenty billion, one hundred million, one hundred one thousand, two hundred".