13012221012 has 96 divisors (see below), whose sum is σ = 35460052992. Its totient is φ = 3636686976.

The previous prime is 13012221007. The next prime is 13012221031. The reversal of 13012221012 is 21012221031.

13012221012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13012220982 and 13012221000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1540633 + ... + 1549055.

It is an arithmetic number, because the mean of its divisors is an integer number (369375552).

Almost surely, 2^13012221012 is an apocalyptic number.

13012221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13012221012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17730026496).

13012221012 is an abundant number, since it is smaller than the sum of its proper divisors (22447831980).

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

13012221012 is a wasteful number, since it uses less digits than its factorization.

13012221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8837 (or 8835 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 13012221012 its reverse (21012221031), we get a palindrome (34024442043).

The spelling of 13012221012 in words is "thirteen billion, twelve million, two hundred twenty-one thousand, twelve".