1220313321223 has 2 divisors, whose sum is σ = 1220313321224. Its totient is φ = 1220313321222.

The previous prime is 1220313321217. The next prime is 1220313321251. The reversal of 1220313321223 is 3221233130221.

It is a weak prime.

It is an emirp because it is prime and its reverse (3221233130221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220313321223 - 2¹³ = 1220313313031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220313321923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610156660611 + 610156660612.

It is an arithmetic number, because the mean of its divisors is an integer number (610156660612).

Almost surely, 2^{1220313321223} is an apocalyptic number.

1220313321223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220313321223 is an equidigital number, since it uses as much as digits as its factorization.

1220313321223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1220313321223 its reverse (3221233130221), we get a palindrome (4441546451444).

The spelling of 1220313321223 in words is "one trillion, two hundred twenty billion, three hundred thirteen million, three hundred twenty-one thousand, two hundred twenty-three".