13021220212 has 144 divisors (see below), whose sum is σ = 31248709632. Its totient is φ = 4666878720.

The previous prime is 13021220143. The next prime is 13021220221. The reversal of 13021220212 is 21202212031.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10734118 + ... + 10735330.

It is an arithmetic number, because the mean of its divisors is an integer number (217004928).

Almost surely, 2^13021220212 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 13021220212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15624354816).

13021220212 is an abundant number, since it is smaller than the sum of its proper divisors (18227489420).

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

13021220212 is a wasteful number, since it uses less digits than its factorization.

13021220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1629 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13021220212 its reverse (21202212031), we get a palindrome (34223432243).

The spelling of 13021220212 in words is "thirteen billion, twenty-one million, two hundred twenty thousand, two hundred twelve".