13221076 has 24 divisors (see below), whose sum is σ = 25333056. Its totient is φ = 5987520.

The previous prime is 13221059. The next prime is 13221077. The reversal of 13221076 is 67012231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221077) 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 7 ways as a sum of consecutive naturals, for example, 21120 + ... + 21736.

It is an arithmetic number, because the mean of its divisors is an integer number (1055544).

Almost surely, 2^13221076 is an apocalyptic number.

It is an amenable number.

13221076 is a deficient number, since it is larger than the sum of its proper divisors (12111980).

13221076 is a wasteful number, since it uses less digits than its factorization.

13221076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 13221076 is about 3636.0797571010. The cubic root of 13221076 is about 236.4588649633.

The spelling of 13221076 in words is "thirteen million, two hundred twenty-one thousand, seventy-six".