11231232011 has 4 divisors (see below), whose sum is σ = 11280709032. Its totient is φ = 11181754992.

The previous prime is 11231231981. The next prime is 11231232031. The reversal of 11231232011 is 11023213211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11023213211 = 5507 ⋅2001673.

It is a cyclic number.

It is not a de Polignac number, because 11231232011 - 2¹⁴ = 11231215627 is a prime.

It is a super-2 number, since 2×11231232011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231232031) 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, 24738170 + ... + 24738623.

It is an arithmetic number, because the mean of its divisors is an integer number (2820177258).

Almost surely, 2^11231232011 is an apocalyptic number.

11231232011 is a deficient number, since it is larger than the sum of its proper divisors (49477021).

11231232011 is an equidigital number, since it uses as much as digits as its factorization.

11231232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49477020.

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

Adding to 11231232011 its reverse (11023213211), we get a palindrome (22254445222).

The spelling of 11231232011 in words is "eleven billion, two hundred thirty-one million, two hundred thirty-two thousand, eleven".