23111332211 has 16 divisors (see below), whose sum is σ = 25641308160. Its totient is φ = 20655136320.

The previous prime is 23111332187. The next prime is 23111332217. The reversal of 23111332211 is 11223311132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23111332211 - 2¹⁸ = 23111070067 is a prime.

It is a super-2 number, since 2×23111332211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23111332217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145406 + ... + 259548.

It is an arithmetic number, because the mean of its divisors is an integer number (1602581760).

Almost surely, 2^23111332211 is an apocalyptic number.

23111332211 is a deficient number, since it is larger than the sum of its proper divisors (2529975949).

23111332211 is a wasteful number, since it uses less digits than its factorization.

23111332211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114466.

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

Adding to 23111332211 its reverse (11223311132), we get a palindrome (34334643343).

The spelling of 23111332211 in words is "twenty-three billion, one hundred eleven million, three hundred thirty-two thousand, two hundred eleven".