201111231233 has 4 divisors (see below), whose sum is σ = 219394070448. Its totient is φ = 182828392020.

The previous prime is 201111231199. The next prime is 201111231241. The reversal of 201111231233 is 332132111102.

It is a happy number.

201111231233 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201111231233 - 2²⁶ = 201044122369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201111237233) 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, 9141419591 + ... + 9141419612.

It is an arithmetic number, because the mean of its divisors is an integer number (54848517612).

Almost surely, 2^201111231233 is an apocalyptic number.

It is an amenable number.

201111231233 is a deficient number, since it is larger than the sum of its proper divisors (18282839215).

201111231233 is a wasteful number, since it uses less digits than its factorization.

201111231233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18282839214.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 201111231233 its reverse (332132111102), we get a palindrome (533243342335).

The spelling of 201111231233 in words is "two hundred one billion, one hundred eleven million, two hundred thirty-one thousand, two hundred thirty-three".