13220302 has 4 divisors (see below), whose sum is σ = 19830456. Its totient is φ = 6610150.

The previous prime is 13220287. The next prime is 13220309. The reversal of 13220302 is 20302231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20302231 = 109 ⋅186259.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305074 + ... + 3305077.

It is an arithmetic number, because the mean of its divisors is an integer number (4957614).

Almost surely, 2^13220302 is an apocalyptic number.

13220302 is a deficient number, since it is larger than the sum of its proper divisors (6610154).

13220302 is an equidigital number, since it uses as much as digits as its factorization.

13220302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610153.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13220302 is about 3635.9733222344. The cubic root of 13220302 is about 236.4542505448.

Adding to 13220302 its reverse (20302231), we get a palindrome (33522533).

The spelling of 13220302 in words is "thirteen million, two hundred twenty thousand, three hundred two".