100202121200100 has 144 divisors (see below), whose sum is σ = 290536428256256. Its totient is φ = 26663589072000.

The previous prime is 100202121200047. The next prime is 100202121200107. The reversal of 100202121200100 is 1002121202001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (100202121200107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2932356015 + ... + 2932390185.

Almost surely, 2^{100202121200100} is an apocalyptic number.

100202121200100 is a gapful number since it is divisible by the number (10) 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 100202121200100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145268214128128).

100202121200100 is an abundant number, since it is smaller than the sum of its proper divisors (190334307056156).

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

100202121200100 is a wasteful number, since it uses less digits than its factorization.

100202121200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54746 (or 54739 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100202121200100 its reverse (1002121202001), we get a palindrome (101204242402101).

The spelling of 100202121200100 in words is "one hundred trillion, two hundred two billion, one hundred twenty-one million, two hundred thousand, one hundred".