1213220323163 has 2 divisors, whose sum is σ = 1213220323164. Its totient is φ = 1213220323162.

The previous prime is 1213220323097. The next prime is 1213220323193. The reversal of 1213220323163 is 3613230223121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3613230223121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213220323163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213220323193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606610161581 + 606610161582.

It is an arithmetic number, because the mean of its divisors is an integer number (606610161582).

Almost surely, 2^{1213220323163} is an apocalyptic number.

1213220323163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213220323163 is an equidigital number, since it uses as much as digits as its factorization.

1213220323163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 1213220323163 its reverse (3613230223121), we get a palindrome (4826450546284).

The spelling of 1213220323163 in words is "one trillion, two hundred thirteen billion, two hundred twenty million, three hundred twenty-three thousand, one hundred sixty-three".