11123210312312 has 64 divisors (see below), whose sum is σ = 24325186200000. Its totient is φ = 4766443774848.

The previous prime is 11123210312309. The next prime is 11123210312359. The reversal of 11123210312312 is 21321301232111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20245814 + ... + 20787962.

It is an arithmetic number, because the mean of its divisors is an integer number (380081034375).

Almost surely, 2^{11123210312312} is an apocalyptic number.

It is an amenable number.

11123210312312 is an abundant number, since it is smaller than the sum of its proper divisors (13201975887688).

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

11123210312312 is an equidigital number, since it uses as much as digits as its factorization.

11123210312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549653 (or 549635 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11123210312312 its reverse (21321301232111), we get a palindrome (32444511544423).

The spelling of 11123210312312 in words is "eleven trillion, one hundred twenty-three billion, two hundred ten million, three hundred twelve thousand, three hundred twelve".