20001312100 has 108 divisors (see below), whose sum is σ = 54522815872. Its totient is φ = 6234148800.

The previous prime is 20001312077. The next prime is 20001312113. The reversal of 20001312100 is 121310002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33372 + ... + 202771.

Almost surely, 2^20001312100 is an apocalyptic number.

20001312100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001312100 is an abundant number, since it is smaller than the sum of its proper divisors (34521503772).

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

20001312100 is a wasteful number, since it uses less digits than its factorization.

20001312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236186 (or 236168 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20001312100 its reverse (121310002), we get a palindrome (20122622102).

The spelling of 20001312100 in words is "twenty billion, one million, three hundred twelve thousand, one hundred".