123421135112 has 32 divisors (see below), whose sum is σ = 252842627520. Its totient is φ = 56013781440.

The previous prime is 123421135111. The next prime is 123421135163. The reversal of 123421135112 is 211531124321.

It is not an unprimeable number, because it can be changed into a prime (123421135111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026923 + ... + 1140794.

It is an arithmetic number, because the mean of its divisors is an integer number (7901332110).

Almost surely, 2^123421135112 is an apocalyptic number.

It is an amenable number.

123421135112 is an abundant number, since it is smaller than the sum of its proper divisors (129421492408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123421135112 is a wasteful number, since it uses less digits than its factorization.

123421135112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168381 (or 2168377 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

Adding to 123421135112 its reverse (211531124321), we get a palindrome (334952259433).

The spelling of 123421135112 in words is "one hundred twenty-three billion, four hundred twenty-one million, one hundred thirty-five thousand, one hundred twelve".