123012203311 has 2 divisors, whose sum is σ = 123012203312. Its totient is φ = 123012203310.

The previous prime is 123012203309. The next prime is 123012203323. The reversal of 123012203311 is 113302210321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123012203311 - 2¹ = 123012203309 is a prime.

Together with 123012203309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123012203351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506101655 + 61506101656.

It is an arithmetic number, because the mean of its divisors is an integer number (61506101656).

Almost surely, 2^123012203311 is an apocalyptic number.

123012203311 is a deficient number, since it is larger than the sum of its proper divisors (1).

123012203311 is an equidigital number, since it uses as much as digits as its factorization.

123012203311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123012203311 its reverse (113302210321), we get a palindrome (236314413632).

The spelling of 123012203311 in words is "one hundred twenty-three billion, twelve million, two hundred three thousand, three hundred eleven".