20101043131100 has 18 divisors (see below), whose sum is σ = 43619263594704. Its totient is φ = 8040417252400.

The previous prime is 20101043131087. The next prime is 20101043131123. The reversal of 20101043131100 is 113134010102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100505215556 + ... + 100505215755.

It is an arithmetic number, because the mean of its divisors is an integer number (2423292421928).

Almost surely, 2^{20101043131100} is an apocalyptic number.

20101043131100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101043131100 is an abundant number, since it is smaller than the sum of its proper divisors (23518220463604).

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

20101043131100 is a wasteful number, since it uses less digits than its factorization.

20101043131100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201010431325 (or 201010431318 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20101043131100 its reverse (113134010102), we get a palindrome (20214177141202).

The spelling of 20101043131100 in words is "twenty trillion, one hundred one billion, forty-three million, one hundred thirty-one thousand, one hundred".