11023231220123 has 4 divisors (see below), whose sum is σ = 11603401284360. Its totient is φ = 10443061155888.

The previous prime is 11023231220087. The next prime is 11023231220129. The reversal of 11023231220123 is 32102213232011.

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 11023231220123 - 2²⁸ = 11022962784667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11023231220129) 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, 290085032090 + ... + 290085032127.

It is an arithmetic number, because the mean of its divisors is an integer number (2900850321090).

Almost surely, 2^{11023231220123} is an apocalyptic number.

11023231220123 is a deficient number, since it is larger than the sum of its proper divisors (580170064237).

11023231220123 is an equidigital number, since it uses as much as digits as its factorization.

11023231220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580170064236.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 11023231220123 its reverse (32102213232011), we get a palindrome (43125444452134).

The spelling of 11023231220123 in words is "eleven trillion, twenty-three billion, two hundred thirty-one million, two hundred twenty thousand, one hundred twenty-three".