20100011101 has 4 divisors (see below), whose sum is σ = 20116367100. Its totient is φ = 20083655104.

The previous prime is 20100011089. The next prime is 20100011131. The reversal of 20100011101 is 10111000102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17995954201 + 2104056900 = 134149^2 + 45870^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100011101 - 2⁹ = 20100010589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100011131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8176156 + ... + 8178613.

It is an arithmetic number, because the mean of its divisors is an integer number (5029091775).

Almost surely, 2^20100011101 is an apocalyptic number.

It is an amenable number.

20100011101 is a deficient number, since it is larger than the sum of its proper divisors (16355999).

20100011101 is a wasteful number, since it uses less digits than its factorization.

20100011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16355998.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 20100011101 its reverse (10111000102), we get a palindrome (30211011203).

It can be divided in two parts, 2010001 and 1101, that added together give a palindrome (2011102).

The spelling of 20100011101 in words is "twenty billion, one hundred million, eleven thousand, one hundred one".