201120123311 has 4 divisors (see below), whose sum is σ = 201130202832. Its totient is φ = 201110043792.

The previous prime is 201120123307. The next prime is 201120123361. The reversal of 201120123311 is 113321021102.

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 201120123311 - 2² = 201120123307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201120123311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201120123361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009771 + ... + 5049756.

It is an arithmetic number, because the mean of its divisors is an integer number (50282550708).

Almost surely, 2^201120123311 is an apocalyptic number.

201120123311 is a deficient number, since it is larger than the sum of its proper divisors (10079521).

201120123311 is a wasteful number, since it uses less digits than its factorization.

201120123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10079520.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201120123311 its reverse (113321021102), we get a palindrome (314441144413).

The spelling of 201120123311 in words is "two hundred one billion, one hundred twenty million, one hundred twenty-three thousand, three hundred eleven".