201011111100221 has 8 divisors (see below), whose sum is σ = 201045964447680. Its totient is φ = 200976258621888.

The previous prime is 201011111100167. The next prime is 201011111100271. The reversal of 201011111100221 is 122001111110102.

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 201011111100221 - 2³⁰ = 201010037358397 is a prime.

It is a super-2 number, since 2×201011111100221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201011111100196 and 201011111100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011111100271) 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, 606849170 + ... + 607180316.

It is an arithmetic number, because the mean of its divisors is an integer number (25130745555960).

Almost surely, 2^{201011111100221} is an apocalyptic number.

It is an amenable number.

201011111100221 is a deficient number, since it is larger than the sum of its proper divisors (34853347459).

201011111100221 is an equidigital number, since it uses as much as digits as its factorization.

201011111100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434563.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201011111100221 its reverse (122001111110102), we get a palindrome (323012222210323).

The spelling of 201011111100221 in words is "two hundred one trillion, eleven billion, one hundred eleven million, one hundred thousand, two hundred twenty-one".