20110021102201 has 4 divisors (see below), whose sum is σ = 20110032982900. Its totient is φ = 20110009221504.

The previous prime is 20110021102189. The next prime is 20110021102253. The reversal of 20110021102201 is 10220112001102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9125111808400 + 10984909293801 = 3020780^2 + 3314349^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110021102201 - 2³⁵ = 20075661363833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110081102201) 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, 2873616 + ... + 6962593.

It is an arithmetic number, because the mean of its divisors is an integer number (5027508245725).

Almost surely, 2^{20110021102201} is an apocalyptic number.

It is an amenable number.

20110021102201 is a deficient number, since it is larger than the sum of its proper divisors (11880699).

20110021102201 is an equidigital number, since it uses as much as digits as its factorization.

20110021102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11880698.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20110021102201 its reverse (10220112001102), we get a palindrome (30330133103303).

The spelling of 20110021102201 in words is "twenty trillion, one hundred ten billion, twenty-one million, one hundred two thousand, two hundred one".