1322220247 has 2 divisors, whose sum is σ = 1322220248. Its totient is φ = 1322220246.

The previous prime is 1322220233. The next prime is 1322220257. The reversal of 1322220247 is 7420222231.

It is a strong prime.

It is an emirp because it is prime and its reverse (7420222231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322220247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322220227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661110123 + 661110124.

It is an arithmetic number, because the mean of its divisors is an integer number (661110124).

Almost surely, 2^1322220247 is an apocalyptic number.

1322220247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322220247 is an equidigital number, since it uses as much as digits as its factorization.

1322220247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 1322220247 is about 36362.3465551936. The cubic root of 1322220247 is about 1097.5759975601.

Adding to 1322220247 its reverse (7420222231), we get a palindrome (8742442478).

The spelling of 1322220247 in words is "one billion, three hundred twenty-two million, two hundred twenty thousand, two hundred forty-seven".