220111202101 has 6 divisors (see below), whose sum is σ = 256047724950. Its totient is φ = 188666744616.

The previous prime is 220111202093. The next prime is 220111202117. The reversal of 220111202101 is 101202111022.

It can be written as a sum of positive squares in only one way, i.e., 157724151025 + 62387051076 = 397145^2 + 249774^2 .

It is not a de Polignac number, because 220111202101 - 2³ = 220111202093 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 (220111202401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2246032626 + ... + 2246032723.

It is an arithmetic number, because the mean of its divisors is an integer number (42674620825).

Almost surely, 2^220111202101 is an apocalyptic number.

It is an amenable number.

220111202101 is a deficient number, since it is larger than the sum of its proper divisors (35936522849).

220111202101 is an equidigital number, since it uses as much as digits as its factorization.

220111202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492065363 (or 4492065356 counting only the distinct ones).

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

Adding to 220111202101 its reverse (101202111022), we get a palindrome (321313313123).

The spelling of 220111202101 in words is "two hundred twenty billion, one hundred eleven million, two hundred two thousand, one hundred one".