201122122012111 has 8 divisors (see below), whose sum is σ = 205269350513040. Its totient is φ = 196999506143808.

The previous prime is 201122122012099. The next prime is 201122122012177. The reversal of 201122122012111 is 111210221221102.

It is a happy number.

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 201122122012111 - 2⁷ = 201122122011983 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 (201122122012181) 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, 6153141646 + ... + 6153174331.

It is an arithmetic number, because the mean of its divisors is an integer number (25658668814130).

Almost surely, 2^{201122122012111} is an apocalyptic number.

201122122012111 is a deficient number, since it is larger than the sum of its proper divisors (4147228500929).

201122122012111 is a wasteful number, since it uses less digits than its factorization.

201122122012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12306316313.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201122122012111 its reverse (111210221221102), we get a palindrome (312332343233213).

The spelling of 201122122012111 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred twenty-two million, twelve thousand, one hundred eleven".