201201220102111 has 4 divisors (see below), whose sum is σ = 201201669128824. Its totient is φ = 201200771075400.

The previous prime is 201201220102073. The next prime is 201201220102163. The reversal of 201201220102111 is 111201022102102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201201220102111 - 2²¹ = 201201218004959 is a prime.

It is a super-2 number, since 2×201201220102111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201220103111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223840560 + ... + 224737621.

It is an arithmetic number, because the mean of its divisors is an integer number (50300417282206).

Almost surely, 2^{201201220102111} is an apocalyptic number.

201201220102111 is a deficient number, since it is larger than the sum of its proper divisors (449026713).

201201220102111 is an equidigital number, since it uses as much as digits as its factorization.

201201220102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449026712.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201201220102111 its reverse (111201022102102), we get a palindrome (312402242204213).

The spelling of 201201220102111 in words is "two hundred one trillion, two hundred one billion, two hundred twenty million, one hundred two thousand, one hundred eleven".