13123201112 has 32 divisors (see below), whose sum is σ = 28166649600. Its totient is φ = 5615128224.

The previous prime is 13123201111. The next prime is 13123201159. The reversal of 13123201112 is 21110232131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123201111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154628 + ... + 223955.

It is an arithmetic number, because the mean of its divisors is an integer number (880207800).

Almost surely, 2^13123201112 is an apocalyptic number.

It is an amenable number.

13123201112 is an abundant number, since it is smaller than the sum of its proper divisors (15043448488).

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

13123201112 is a wasteful number, since it uses less digits than its factorization.

13123201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379215 (or 379211 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13123201112 its reverse (21110232131), we get a palindrome (34233433243).

The spelling of 13123201112 in words is "thirteen billion, one hundred twenty-three million, two hundred one thousand, one hundred twelve".