202001100100 has 72 divisors (see below), whose sum is σ = 449611410528. Its totient is φ = 78728275200.

The previous prime is 202001100097. The next prime is 202001100113. The reversal of 202001100100 is 1001100202.

It is a super-2 number, since 2×202001100100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3195399 + ... + 3258001.

It is an arithmetic number, because the mean of its divisors is an integer number (6244602924).

Almost surely, 2^202001100100 is an apocalyptic number.

202001100100 is a gapful number since it is divisible by the number (20) 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 202001100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224805705264).

202001100100 is an abundant number, since it is smaller than the sum of its proper divisors (247610310428).

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

202001100100 is a wasteful number, since it uses less digits than its factorization.

202001100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63445 (or 63438 counting only the distinct ones).

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

Adding to 202001100100 its reverse (1001100202), we get a palindrome (203002200302).

The spelling of 202001100100 in words is "two hundred two billion, one million, one hundred thousand, one hundred".