13123021112012 has 72 divisors (see below), whose sum is σ = 26812484126064. Its totient is φ = 5603602612608.

The previous prime is 13123021111973. The next prime is 13123021112041. The reversal of 13123021112012 is 21021112032131.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68612498 + ... + 68803494.

It is an arithmetic number, because the mean of its divisors is an integer number (372395612862).

Almost surely, 2^{13123021112012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13123021112012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13406242063032).

13123021112012 is an abundant number, since it is smaller than the sum of its proper divisors (13689463014052).

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

13123021112012 is a wasteful number, since it uses less digits than its factorization.

13123021112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192295 (or 192286 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13123021112012 its reverse (21021112032131), we get a palindrome (34144133144143).

The spelling of 13123021112012 in words is "thirteen trillion, one hundred twenty-three billion, twenty-one million, one hundred twelve thousand, twelve".