20111101012 has 12 divisors (see below), whose sum is σ = 35542887156. Its totient is φ = 9955990400.

The previous prime is 20111101009. The next prime is 20111101051. The reversal of 20111101012 is 21010111102.

It can be written as a sum of positive squares in 2 ways, for example, as 9292188816 + 10818912196 = 96396^2 + 104014^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20111101012.

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 3 ways as a sum of consecutive naturals, for example, 24889573 + ... + 24890380.

It is an arithmetic number, because the mean of its divisors is an integer number (2961907263).

Almost surely, 2^20111101012 is an apocalyptic number.

It is an amenable number.

20111101012 is a deficient number, since it is larger than the sum of its proper divisors (15431786144).

20111101012 is a wasteful number, since it uses less digits than its factorization.

20111101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49780058 (or 49780056 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20111101012 its reverse (21010111102), we get a palindrome (41121212114).

The spelling of 20111101012 in words is "twenty billion, one hundred eleven million, one hundred one thousand, twelve".