201220112111 has 8 divisors (see below), whose sum is σ = 213078286224. Its totient is φ = 189364348800.

The previous prime is 201220112081. The next prime is 201220112147. The reversal of 201220112111 is 111211022102.

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 201220112111 - 2³⁰ = 200146370287 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 (201220142111) 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, 429425 + ... + 766058.

It is an arithmetic number, because the mean of its divisors is an integer number (26634785778).

Almost surely, 2^201220112111 is an apocalyptic number.

201220112111 is a deficient number, since it is larger than the sum of its proper divisors (11858174113).

201220112111 is a wasteful number, since it uses less digits than its factorization.

201220112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205401.

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

Adding to 201220112111 its reverse (111211022102), we get a palindrome (312431134213).

Subtracting from 201220112111 its reverse (111211022102), we obtain a palindrome (90009090009).

The spelling of 201220112111 in words is "two hundred one billion, two hundred twenty million, one hundred twelve thousand, one hundred eleven".