123223220311277 has 2 divisors, whose sum is σ = 123223220311278. Its totient is φ = 123223220311276.

The previous prime is 123223220311271. The next prime is 123223220311339. The reversal of 123223220311277 is 772113022322321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122443541907241 + 779678404036 = 11065421^2 + 882994^2 .

It is a cyclic number.

It is not a de Polignac number, because 123223220311277 - 2⁴⁴ = 105631034266861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123223220311277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123223220311271) 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, 61611610155638 + 61611610155639.

It is an arithmetic number, because the mean of its divisors is an integer number (61611610155639).

Almost surely, 2^{123223220311277} is an apocalyptic number.

It is an amenable number.

123223220311277 is a deficient number, since it is larger than the sum of its proper divisors (1).

123223220311277 is an equidigital number, since it uses as much as digits as its factorization.

123223220311277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

Adding to 123223220311277 its reverse (772113022322321), we get a palindrome (895336242633598).

The spelling of 123223220311277 in words is "one hundred twenty-three trillion, two hundred twenty-three billion, two hundred twenty million, three hundred eleven thousand, two hundred seventy-seven".