20010011100 has 72 divisors (see below), whose sum is σ = 58264531248. Its totient is φ = 5302003200.

The previous prime is 20010011089. The next prime is 20010011111. The reversal of 20010011100 is 111001002.

It is an interprime number because it is at equal distance from previous prime (20010011089) and next prime (20010011111).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 165321 + ... + 259520.

Almost surely, 2^20010011100 is an apocalyptic number.

20010011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010011100 is an abundant number, since it is smaller than the sum of its proper divisors (38254520148).

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

20010011100 is a wasteful number, since it uses less digits than its factorization.

20010011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425015 (or 425008 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 20010011100 its reverse (111001002), we get a palindrome (20121012102).

The spelling of 20010011100 in words is "twenty billion, ten million, eleven thousand, one hundred".