20211001101101 has 4 divisors (see below), whose sum is σ = 20592340744572. Its totient is φ = 19829661457632.

The previous prime is 20211001101029. The next prime is 20211001101119. The reversal of 20211001101101 is 10110110011202.

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 5193430788100 + 15017570313001 = 2278910^2 + 3875251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211001101101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211001101131) 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, 190669821656 + ... + 190669821761.

It is an arithmetic number, because the mean of its divisors is an integer number (5148085186143).

Almost surely, 2^{20211001101101} is an apocalyptic number.

It is an amenable number.

20211001101101 is a deficient number, since it is larger than the sum of its proper divisors (381339643471).

20211001101101 is an equidigital number, since it uses as much as digits as its factorization.

20211001101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381339643470.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20211001101101 its reverse (10110110011202), we get a palindrome (30321111112303).

The spelling of 20211001101101 in words is "twenty trillion, two hundred eleven billion, one million, one hundred one thousand, one hundred one".