20001202100 has 72 divisors (see below), whose sum is σ = 50133541248. Its totient is φ = 6845324800.

The previous prime is 20001202057. The next prime is 20001202127. The reversal of 20001202100 is 120210002.

It is a congruent number.

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, 516092 + ... + 553491.

It is an arithmetic number, because the mean of its divisors is an integer number (696299184).

Almost surely, 2^20001202100 is an apocalyptic number.

20001202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001202100 is an abundant number, since it is smaller than the sum of its proper divisors (30132339148).

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

20001202100 is a wasteful number, since it uses less digits than its factorization.

20001202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069625 (or 1069618 counting only the distinct ones).

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

Adding to 20001202100 its reverse (120210002), we get a palindrome (20121412102).

The spelling of 20001202100 in words is "twenty billion, one million, two hundred two thousand, one hundred".