123235221344 has 24 divisors (see below), whose sum is σ = 242672478048. Its totient is φ = 61604115840.

The previous prime is 123235221311. The next prime is 123235221419. The reversal of 123235221344 is 443122532321.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 123235221344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272507 + ... + 566330.

It is an arithmetic number, because the mean of its divisors is an integer number (10111353252).

Almost surely, 2^123235221344 is an apocalyptic number.

It is an amenable number.

123235221344 is a deficient number, since it is larger than the sum of its proper divisors (119437256704).

123235221344 is an equidigital number, since it uses as much as digits as its factorization.

123235221344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843438 (or 843430 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

Adding to 123235221344 its reverse (443122532321), we get a palindrome (566357753665).

The spelling of 123235221344 in words is "one hundred twenty-three billion, two hundred thirty-five million, two hundred twenty-one thousand, three hundred forty-four".