1320222311 has 2 divisors, whose sum is σ = 1320222312. Its totient is φ = 1320222310.

The previous prime is 1320222307. The next prime is 1320222347. The reversal of 1320222311 is 1132220231.

It is a weak prime.

It is an emirp because it is prime and its reverse (1132220231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320222311 - 2² = 1320222307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320222311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320222811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660111155 + 660111156.

It is an arithmetic number, because the mean of its divisors is an integer number (660111156).

Almost surely, 2^1320222311 is an apocalyptic number.

1320222311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320222311 is an equidigital number, since it uses as much as digits as its factorization.

1320222311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1320222311 is about 36334.8635748092. The cubic root of 1320222311 is about 1097.0228894958.

Adding to 1320222311 its reverse (1132220231), we get a palindrome (2452442542).

The spelling of 1320222311 in words is "one billion, three hundred twenty million, two hundred twenty-two thousand, three hundred eleven".