123213110213 has 2 divisors, whose sum is σ = 123213110214. Its totient is φ = 123213110212.

The previous prime is 123213110177. The next prime is 123213110261. The reversal of 123213110213 is 312011312321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120577006564 + 2636103649 = 347242^2 + 51343^2 .

It is an emirp because it is prime and its reverse (312011312321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123213110213 - 2¹⁰ = 123213109189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123213110413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61606555106 + 61606555107.

It is an arithmetic number, because the mean of its divisors is an integer number (61606555107).

Almost surely, 2^123213110213 is an apocalyptic number.

It is an amenable number.

123213110213 is a deficient number, since it is larger than the sum of its proper divisors (1).

123213110213 is an equidigital number, since it uses as much as digits as its factorization.

123213110213 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 123213110213 its reverse (312011312321), we get a palindrome (435224422534).

The spelling of 123213110213 in words is "one hundred twenty-three billion, two hundred thirteen million, one hundred ten thousand, two hundred thirteen".