123100211213123 has 2 divisors, whose sum is σ = 123100211213124. Its totient is φ = 123100211213122.

The previous prime is 123100211213071. The next prime is 123100211213137. The reversal of 123100211213123 is 321312112001321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123100211213123 - 2¹⁶ = 123100211147587 is a prime.

It is not a weakly prime, because it can be changed into another prime (123100211212123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61550105606561 + 61550105606562.

It is an arithmetic number, because the mean of its divisors is an integer number (61550105606562).

Almost surely, 2^{123100211213123} is an apocalyptic number.

123100211213123 is a deficient number, since it is larger than the sum of its proper divisors (1).

123100211213123 is an equidigital number, since it uses as much as digits as its factorization.

123100211213123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 123100211213123 its reverse (321312112001321), we get a palindrome (444412323214444).

The spelling of 123100211213123 in words is "one hundred twenty-three trillion, one hundred billion, two hundred eleven million, two hundred thirteen thousand, one hundred twenty-three".