200100122100 has 54 divisors (see below), whose sum is σ = 627202718870. Its totient is φ = 53360032320.

The previous prime is 200100122069. The next prime is 200100122113. The reversal of 200100122100 is 1221001002.

It can be written as a sum of positive squares in 3 ways, for example, as 360848016 + 199739274084 = 18996^2 + 446922^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 111165835 + ... + 111167634.

Almost surely, 2^200100122100 is an apocalyptic number.

200100122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200100122100 is an abundant number, since it is smaller than the sum of its proper divisors (427102596770).

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

200100122100 is a wasteful number, since it uses less digits than its factorization.

200100122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222333489 (or 222333479 counting only the distinct ones).

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

Adding to 200100122100 its reverse (1221001002), we get a palindrome (201321123102).

The spelling of 200100122100 in words is "two hundred billion, one hundred million, one hundred twenty-two thousand, one hundred".