13212112 has 20 divisors (see below), whose sum is σ = 26020036. Its totient is φ = 6497280.

The previous prime is 13212109. The next prime is 13212131. The reversal of 13212112 is 21121231.

It can be written as a sum of positive squares in 2 ways, for example, as 6780816 + 6431296 = 2604^2 + 2536^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13212092 and 13212101.

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 3 ways as a sum of consecutive naturals, for example, 5793 + ... + 7744.

Almost surely, 2^13212112 is an apocalyptic number.

It is an amenable number.

13212112 is a deficient number, since it is larger than the sum of its proper divisors (12807924).

13212112 is a wasteful number, since it uses less digits than its factorization.

13212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13606 (or 13600 counting only the distinct ones).

The product of its digits is 24, while the sum is 13.

The square root of 13212112 is about 3634.8469018653. The cubic root of 13212112 is about 236.4054125190.

Adding to 13212112 its reverse (21121231), we get a palindrome (34333343).

The spelling of 13212112 in words is "thirteen million, two hundred twelve thousand, one hundred twelve".