201122012111 has 8 divisors (see below), whose sum is σ = 203021320320. Its totient is φ = 199223068248.

The previous prime is 201122012099. The next prime is 201122012123. The reversal of 201122012111 is 111210221102.

It is an interprime number because it is at equal distance from previous prime (201122012099) and next prime (201122012123).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201122012111 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 (201122012131) 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, 1090070 + ... + 1261148.

It is an arithmetic number, because the mean of its divisors is an integer number (25377665040).

Almost surely, 2^201122012111 is an apocalyptic number.

201122012111 is a deficient number, since it is larger than the sum of its proper divisors (1899308209).

201122012111 is a wasteful number, since it uses less digits than its factorization.

201122012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182173.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201122012111 its reverse (111210221102), we get a palindrome (312332233213).

The spelling of 201122012111 in words is "two hundred one billion, one hundred twenty-two million, twelve thousand, one hundred eleven".