13203211112 has 144 divisors (see below), whose sum is σ = 32735771460. Its totient is φ = 4947651072.

The previous prime is 13203211097. The next prime is 13203211121. The reversal of 13203211112 is 21111230231.

It can be written as a sum of positive squares in 2 ways, for example, as 13143705316 + 59505796 = 114646^2 + 7714^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1836068 + ... + 1843244.

Almost surely, 2^13203211112 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 13203211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16367885730).

13203211112 is an abundant number, since it is smaller than the sum of its proper divisors (19532560348).

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

13203211112 is a wasteful number, since it uses less digits than its factorization.

13203211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248 (or 7218 counting only the distinct ones).

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

Adding to 13203211112 its reverse (21111230231), we get a palindrome (34314441343).

The spelling of 13203211112 in words is "thirteen billion, two hundred three million, two hundred eleven thousand, one hundred twelve".