202001002100 has 36 divisors (see below), whose sum is σ = 438372007500. Its totient is φ = 80794901760.

The previous prime is 202001002097. The next prime is 202001002103. The reversal of 202001002100 is 1200100202.

It is an interprime number because it is at equal distance from previous prime (202001002097) and next prime (202001002103).

It can be written as a sum of positive squares in 6 ways, for example, as 3917257744 + 198083744356 = 62588^2 + 445066^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202001002103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1612526 + ... + 1733274.

Almost surely, 2^202001002100 is an apocalyptic number.

202001002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202001002100 is an abundant number, since it is smaller than the sum of its proper divisors (236371005400).

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

202001002100 is a wasteful number, since it uses less digits than its factorization.

202001002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137492 (or 137485 counting only the distinct ones).

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

Adding to 202001002100 its reverse (1200100202), we get a palindrome (203201102302).

The spelling of 202001002100 in words is "two hundred two billion, one million, two thousand, one hundred".