13212461 has 6 divisors (see below), whose sum is σ = 13406286. Its totient is φ = 13021400.

The previous prime is 13212443. The next prime is 13212491. The reversal of 13212461 is 16421231.

It can be written as a sum of positive squares in only one way, i.e., 12602500 + 609961 = 3550^2 + 781^2 .

It is not a de Polignac number, because 13212461 - 2¹⁰ = 13211437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212431) 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 5 ways as a sum of consecutive naturals, for example, 3731 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (2234381).

Almost surely, 2^13212461 is an apocalyptic number.

It is an amenable number.

13212461 is a deficient number, since it is larger than the sum of its proper divisors (193825).

13212461 is an frugal number, since it uses more digits than its factorization.

13212461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763 (or 2692 counting only the distinct ones).

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

The square root of 13212461 is about 3634.8949090723. The cubic root of 13212461 is about 236.4074940626.

Adding to 13212461 its reverse (16421231), we get a palindrome (29633692).

The spelling of 13212461 in words is "thirteen million, two hundred twelve thousand, four hundred sixty-one".