13221461 has 12 divisors (see below), whose sum is σ = 15325440. Its totient is φ = 11309760.

The previous prime is 13221457. The next prime is 13221479. The reversal of 13221461 is 16412231.

It is not a de Polignac number, because 13221461 - 2² = 13221457 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 (13221401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1100 + ... + 5258.

It is an arithmetic number, because the mean of its divisors is an integer number (1277120).

Almost surely, 2^13221461 is an apocalyptic number.

13221461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13221461 is a deficient number, since it is larger than the sum of its proper divisors (2103979).

13221461 is a wasteful number, since it uses less digits than its factorization.

13221461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204 (or 4187 counting only the distinct ones).

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

The square root of 13221461 is about 3636.1326983486. The cubic root of 13221461 is about 236.4611601819.

Adding to 13221461 its reverse (16412231), we get a palindrome (29633692).

The spelling of 13221461 in words is "thirteen million, two hundred twenty-one thousand, four hundred sixty-one".