13211320212 has 96 divisors (see below), whose sum is σ = 34504780800. Its totient is φ = 4371343200.

The previous prime is 13211320201. The next prime is 13211320223. The reversal of 13211320212 is 21202311231.

13211320212 is a `hidden beast` number, since 1 + 321 + 1 + 320 + 21 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (13211320201) and next prime (13211320223).

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15746089 + ... + 15746927.

It is an arithmetic number, because the mean of its divisors is an integer number (359424800).

Almost surely, 2^13211320212 is an apocalyptic number.

13211320212 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 13211320212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17252390400).

13211320212 is an abundant number, since it is smaller than the sum of its proper divisors (21293460588).

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

13211320212 is a wasteful number, since it uses less digits than its factorization.

13211320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754 (or 1746 counting only the distinct ones).

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

Adding to 13211320212 its reverse (21202311231), we get a palindrome (34413631443).

The spelling of 13211320212 in words is "thirteen billion, two hundred eleven million, three hundred twenty thousand, two hundred twelve".