1322391227 has 4 divisors (see below), whose sum is σ = 1328658696. Its totient is φ = 1316123760.

The previous prime is 1322391221. The next prime is 1322391229. The reversal of 1322391227 is 7221932231.

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

It is a cyclic number.

It is not a de Polignac number, because 1322391227 - 2²⁰ = 1321342651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322391193 and 1322391202.

It is not an unprimeable number, because it can be changed into a prime (1322391221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3133418 + ... + 3133839.

It is an arithmetic number, because the mean of its divisors is an integer number (332164674).

Almost surely, 2^1322391227 is an apocalyptic number.

1322391227 is a deficient number, since it is larger than the sum of its proper divisors (6267469).

1322391227 is an equidigital number, since it uses as much as digits as its factorization.

1322391227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6267468.

The product of its digits is 9072, while the sum is 32.

The square root of 1322391227 is about 36364.6975375844. The cubic root of 1322391227 is about 1097.6233057288.

The spelling of 1322391227 in words is "one billion, three hundred twenty-two million, three hundred ninety-one thousand, two hundred twenty-seven".