23211111123 has 24 divisors (see below), whose sum is σ = 33731058816. Its totient is φ = 15380064000.

The previous prime is 23211111061. The next prime is 23211111127. The reversal of 23211111123 is 32111111232.

It is not a de Polignac number, because 23211111123 - 2¹⁰ = 23211110099 is a prime.

It is a super-2 number, since 2×23211111123² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23211111096 and 23211111105.

It is not an unprimeable number, because it can be changed into a prime (23211111127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4560286 + ... + 4565372.

It is an arithmetic number, because the mean of its divisors is an integer number (1405460784).

Almost surely, 2^23211111123 is an apocalyptic number.

23211111123 is a deficient number, since it is larger than the sum of its proper divisors (10519947693).

23211111123 is a wasteful number, since it uses less digits than its factorization.

23211111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8075 (or 8072 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 23211111123 its reverse (32111111232), we get a palindrome (55322222355).

It can be divided in two parts, 2 and 3211111123, that multiplied together give a palindrome (6422222246).

The spelling of 23211111123 in words is "twenty-three billion, two hundred eleven million, one hundred eleven thousand, one hundred twenty-three".