23133122111 has 4 divisors (see below), whose sum is σ = 25236133224. Its totient is φ = 21030111000.

The previous prime is 23133122081. The next prime is 23133122161. The reversal of 23133122111 is 11122133132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23133122111 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 (23133122161) 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, 1051505540 + ... + 1051505561.

It is an arithmetic number, because the mean of its divisors is an integer number (6309033306).

Almost surely, 2^23133122111 is an apocalyptic number.

23133122111 is a deficient number, since it is larger than the sum of its proper divisors (2103011113).

23133122111 is a wasteful number, since it uses less digits than its factorization.

23133122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103011112.

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

Adding to 23133122111 its reverse (11122133132), we get a palindrome (34255255243).

The spelling of 23133122111 in words is "twenty-three billion, one hundred thirty-three million, one hundred twenty-two thousand, one hundred eleven".