20101100012 has 24 divisors (see below), whose sum is σ = 41182743840. Its totient is φ = 8404640640.

The previous prime is 20101100009. The next prime is 20101100017. The reversal of 20101100012 is 21000110102.

It is not an unprimeable number, because it can be changed into a prime (20101100017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8753687 + ... + 8755982.

It is an arithmetic number, because the mean of its divisors is an integer number (1715947660).

Almost surely, 2^20101100012 is an apocalyptic number.

It is an amenable number.

20101100012 is an abundant number, since it is smaller than the sum of its proper divisors (21081643828).

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

20101100012 is a wasteful number, since it uses less digits than its factorization.

20101100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17509721 (or 17509719 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20101100012 its reverse (21000110102), we get a palindrome (41101210114).

The spelling of 20101100012 in words is "twenty billion, one hundred one million, one hundred thousand, twelve".