123102113213 has 2 divisors, whose sum is σ = 123102113214. Its totient is φ = 123102113212.

The previous prime is 123102113203. The next prime is 123102113221. The reversal of 123102113213 is 312311201321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114604592089 + 8497521124 = 338533^2 + 92182^2 .

It is a cyclic number.

It is not a de Polignac number, because 123102113213 - 2⁸ = 123102112957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123102113203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551056606 + 61551056607.

It is an arithmetic number, because the mean of its divisors is an integer number (61551056607).

Almost surely, 2^123102113213 is an apocalyptic number.

It is an amenable number.

123102113213 is a deficient number, since it is larger than the sum of its proper divisors (1).

123102113213 is an equidigital number, since it uses as much as digits as its factorization.

123102113213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123102113213 its reverse (312311201321), we get a palindrome (435413314534).

The spelling of 123102113213 in words is "one hundred twenty-three billion, one hundred two million, one hundred thirteen thousand, two hundred thirteen".