23211133123 has 4 divisors (see below), whose sum is σ = 24220312848. Its totient is φ = 22201953400.

The previous prime is 23211133109. The next prime is 23211133139. The reversal of 23211133123 is 32133111232.

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 23211133123 - 2¹⁷ = 23211002051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23211133094 and 23211133103.

It is not an unprimeable number, because it can be changed into a prime (23211133103) 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, 504589828 + ... + 504589873.

It is an arithmetic number, because the mean of its divisors is an integer number (6055078212).

Almost surely, 2^23211133123 is an apocalyptic number.

23211133123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23211133123 is a deficient number, since it is larger than the sum of its proper divisors (1009179725).

23211133123 is a wasteful number, since it uses less digits than its factorization.

23211133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009179724.

The product of its digits is 648, while the sum is 22.

Adding to 23211133123 its reverse (32133111232), we get a palindrome (55344244355).

The spelling of 23211133123 in words is "twenty-three billion, two hundred eleven million, one hundred thirty-three thousand, one hundred twenty-three".