20201111101 has 8 divisors (see below), whose sum is σ = 21601189944. Its totient is φ = 18824563200.

The previous prime is 20201111089. The next prime is 20201111137. The reversal of 20201111101 is 10111110202.

It can be written as a sum of positive squares in 4 ways, for example, as 8347563225 + 11853547876 = 91365^2 + 108874^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20201111101 - 2¹⁵ = 20201078333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201111141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5880960 + ... + 5884393.

It is an arithmetic number, because the mean of its divisors is an integer number (2700148743).

Almost surely, 2^20201111101 is an apocalyptic number.

It is an amenable number.

20201111101 is a deficient number, since it is larger than the sum of its proper divisors (1400078843).

20201111101 is a wasteful number, since it uses less digits than its factorization.

20201111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11765471.

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

Adding to 20201111101 its reverse (10111110202), we get a palindrome (30312221303).

The spelling of 20201111101 in words is "twenty billion, two hundred one million, one hundred eleven thousand, one hundred one".