13220822 has 4 divisors (see below), whose sum is σ = 19831236. Its totient is φ = 6610410.

The previous prime is 13220773. The next prime is 13220843. The reversal of 13220822 is 22802231.

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

It is a junction number, because it is equal to n+sod(n) for n = 13220794 and 13220803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305204 + ... + 3305207.

It is an arithmetic number, because the mean of its divisors is an integer number (4957809).

Almost surely, 2^13220822 is an apocalyptic number.

13220822 is a deficient number, since it is larger than the sum of its proper divisors (6610414).

13220822 is an equidigital number, since it uses as much as digits as its factorization.

13220822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6610413.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 13220822 is about 3636.0448292066. The cubic root of 13220822 is about 236.4573506908.

The spelling of 13220822 in words is "thirteen million, two hundred twenty thousand, eight hundred twenty-two".