13222277 has 4 divisors (see below), whose sum is σ = 14000076. Its totient is φ = 12444480.

The previous prime is 13222273. The next prime is 13222301. The reversal of 13222277 is 77222231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7695076 + 5527201 = 2774^2 + 2351^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222277 - 2² = 13222273 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 (13222273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388874 + ... + 388907.

It is an arithmetic number, because the mean of its divisors is an integer number (3500019).

Almost surely, 2^13222277 is an apocalyptic number.

13222277 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13222277 is a deficient number, since it is larger than the sum of its proper divisors (777799).

13222277 is an equidigital number, since it uses as much as digits as its factorization.

13222277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777798.

The product of its digits is 2352, while the sum is 26.

The square root of 13222277 is about 3636.2449037434. The cubic root of 13222277 is about 236.4660247058.

The spelling of 13222277 in words is "thirteen million, two hundred twenty-two thousand, two hundred seventy-seven".