201121120110111 has 4 divisors (see below), whose sum is σ = 268161493480152. Its totient is φ = 134080746740072.

The previous prime is 201121120110047. The next prime is 201121120110161. The reversal of 201121120110111 is 111011021121102.

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 201121120110111 - 2⁶ = 201121120110047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121120110161) 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, 33520186685016 + ... + 33520186685021.

It is an arithmetic number, because the mean of its divisors is an integer number (67040373370038).

Almost surely, 2^{201121120110111} is an apocalyptic number.

201121120110111 is a deficient number, since it is larger than the sum of its proper divisors (67040373370041).

201121120110111 is an equidigital number, since it uses as much as digits as its factorization.

201121120110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67040373370040.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 201121120110111 its reverse (111011021121102), we get a palindrome (312132141231213).

The spelling of 201121120110111 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty million, one hundred ten thousand, one hundred eleven".