123213030222277 has 2 divisors, whose sum is σ = 123213030222278. Its totient is φ = 123213030222276.

The previous prime is 123213030222209. The next prime is 123213030222283. The reversal of 123213030222277 is 772222030312321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113301526973761 + 9911503248516 = 10644319^2 + 3148254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123213030222277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123213030222287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61606515111138 + 61606515111139.

It is an arithmetic number, because the mean of its divisors is an integer number (61606515111139).

Almost surely, 2^{123213030222277} is an apocalyptic number.

It is an amenable number.

123213030222277 is a deficient number, since it is larger than the sum of its proper divisors (1).

123213030222277 is an equidigital number, since it uses as much as digits as its factorization.

123213030222277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 37.

Adding to 123213030222277 its reverse (772222030312321), we get a palindrome (895435060534598).

The spelling of 123213030222277 in words is "one hundred twenty-three trillion, two hundred thirteen billion, thirty million, two hundred twenty-two thousand, two hundred seventy-seven".