13212641 has 4 divisors (see below), whose sum is σ = 14229012. Its totient is φ = 12196272.

The previous prime is 13212629. The next prime is 13212643. The reversal of 13212641 is 14621231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2876416 + 10336225 = 1696^2 + 3215^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212641 - 2²² = 9018337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508166 + ... + 508191.

It is an arithmetic number, because the mean of its divisors is an integer number (3557253).

Almost surely, 2^13212641 is an apocalyptic number.

It is an amenable number.

13212641 is a deficient number, since it is larger than the sum of its proper divisors (1016371).

13212641 is a wasteful number, since it uses less digits than its factorization.

13212641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016370.

The product of its digits is 288, while the sum is 20.

The square root of 13212641 is about 3634.9196689886. The cubic root of 13212641 is about 236.4085676238.

Adding to 13212641 its reverse (14621231), we get a palindrome (27833872).

It can be divided in two parts, 1321 and 2641, that multiplied together give a triangular number (3488761 = T₂₆₄₁).

The spelling of 13212641 in words is "thirteen million, two hundred twelve thousand, six hundred forty-one".