13211136 has 120 divisors (see below), whose sum is σ = 39577824. Its totient is φ = 4239360.

The previous prime is 13211129. The next prime is 13211161. The reversal of 13211136 is 63111231.

It is a super-2 number, since 2×13211136² = 349068228820992, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216546 + ... + 216606.

Almost surely, 2^13211136 is an apocalyptic number.

13211136 is a gapful number since it is divisible by the number (16) 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 13211136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19788912).

13211136 is an abundant number, since it is smaller than the sum of its proper divisors (26366688).

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

13211136 is an equidigital number, since it uses as much as digits as its factorization.

13211136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 113 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 13211136 is about 3634.7126433874. The cubic root of 13211136 is about 236.3995911594.

Adding to 13211136 its reverse (63111231), we get a palindrome (76322367).

The spelling of 13211136 in words is "thirteen million, two hundred eleven thousand, one hundred thirty-six".