13321120212 has 108 divisors (see below), whose sum is σ = 35007876540. Its totient is φ = 4270413312.

The previous prime is 13321120201. The next prime is 13321120231. The reversal of 13321120212 is 21202112331.

13321120212 is a `hidden beast` number, since 1 + 332 + 1 + 120 + 212 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2850919236 + 10470200976 = 53394^2 + 102324^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 4384758 + ... + 4387794.

It is an arithmetic number, because the mean of its divisors is an integer number (324147005).

Almost surely, 2^13321120212 is an apocalyptic number.

13321120212 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 13321120212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17503938270).

13321120212 is an abundant number, since it is smaller than the sum of its proper divisors (21686756328).

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

13321120212 is a wasteful number, since it uses less digits than its factorization.

13321120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210 (or 3168 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13321120212 its reverse (21202112331), we get a palindrome (34523232543).

It can be divided in two parts, 1332 and 1120212, that multiplied together give a square (1492122384 = 38628²).

The spelling of 13321120212 in words is "thirteen billion, three hundred twenty-one million, one hundred twenty thousand, two hundred twelve".