201122011022111 has 4 divisors (see below), whose sum is σ = 201122141338272. Its totient is φ = 201121880705952.

The previous prime is 201122011022099. The next prime is 201122011022161. The reversal of 201122011022111 is 111220110221102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201122011022111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201122011022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122011022161) 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, 62814986 + ... + 65939111.

It is an arithmetic number, because the mean of its divisors is an integer number (50280535334568).

Almost surely, 2^{201122011022111} is an apocalyptic number.

201122011022111 is a deficient number, since it is larger than the sum of its proper divisors (130316161).

201122011022111 is a wasteful number, since it uses less digits than its factorization.

201122011022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130316160.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201122011022111 its reverse (111220110221102), we get a palindrome (312342121243213).

The spelling of 201122011022111 in words is "two hundred one trillion, one hundred twenty-two billion, eleven million, twenty-two thousand, one hundred eleven".