201122120111 has 4 divisors (see below), whose sum is σ = 219405949224. Its totient is φ = 182838291000.

The previous prime is 201122120093. The next prime is 201122120131. The reversal of 201122120111 is 111021221102.

201122120111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201122120111 - 2²² = 201117925807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122120131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9141914540 + ... + 9141914561.

It is an arithmetic number, because the mean of its divisors is an integer number (54851487306).

Almost surely, 2^201122120111 is an apocalyptic number.

201122120111 is a deficient number, since it is larger than the sum of its proper divisors (18283829113).

201122120111 is a wasteful number, since it uses less digits than its factorization.

201122120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18283829112.

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

Adding to 201122120111 its reverse (111021221102), we get a palindrome (312143341213).

It can be divided in two parts, 2011 and 22120111, that added together give a palindrome (22122122).

The spelling of 201122120111 in words is "two hundred one billion, one hundred twenty-two million, one hundred twenty thousand, one hundred eleven".