20111110010100 has 144 divisors (see below), whose sum is σ = 64793138807040. Its totient is φ = 5351379264000.

The previous prime is 20111110010087. The next prime is 20111110010137. The reversal of 20111110010100 is 101001111102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6793701 + ... + 9293900.

Almost surely, 2^{20111110010100} is an apocalyptic number.

20111110010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111110010100 is an abundant number, since it is smaller than the sum of its proper divisors (44682028796940).

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

20111110010100 is a wasteful number, since it uses less digits than its factorization.

20111110010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16088087 (or 16088074 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 20111110010100 its reverse (101001111102), we get a palindrome (20212111121202).

The spelling of 20111110010100 in words is "twenty trillion, one hundred eleven billion, one hundred ten million, ten thousand, one hundred".