5111221311223 has 2 divisors, whose sum is σ = 5111221311224. Its totient is φ = 5111221311222.

The previous prime is 5111221311173. The next prime is 5111221311233. The reversal of 5111221311223 is 3221131221115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5111221311223 - 2¹³ = 5111221303031 is a prime.

It is a super-2 number, since 2×5111221311223² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5111221311233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555610655611 + 2555610655612.

It is an arithmetic number, because the mean of its divisors is an integer number (2555610655612).

Almost surely, 2^{5111221311223} is an apocalyptic number.

5111221311223 is a deficient number, since it is larger than the sum of its proper divisors (1).

5111221311223 is an equidigital number, since it uses as much as digits as its factorization.

5111221311223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 25.

Adding to 5111221311223 its reverse (3221131221115), we get a palindrome (8332352532338).

The spelling of 5111221311223 in words is "five trillion, one hundred eleven billion, two hundred twenty-one million, three hundred eleven thousand, two hundred twenty-three".