201130023111 has 4 divisors (see below), whose sum is σ = 268173364152. Its totient is φ = 134086682072.

The previous prime is 201130023109. The next prime is 201130023119. The reversal of 201130023111 is 111320031102.

It is a happy number.

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 201130023111 - 2¹ = 201130023109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201130023119) 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, 33521670516 + ... + 33521670521.

It is an arithmetic number, because the mean of its divisors is an integer number (67043341038).

Almost surely, 2^201130023111 is an apocalyptic number.

201130023111 is a deficient number, since it is larger than the sum of its proper divisors (67043341041).

201130023111 is an equidigital number, since it uses as much as digits as its factorization.

201130023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67043341040.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 201130023111 its reverse (111320031102), we get a palindrome (312450054213).

The spelling of 201130023111 in words is "two hundred one billion, one hundred thirty million, twenty-three thousand, one hundred eleven".