123110110213 has 4 divisors (see below), whose sum is σ = 130351881420. Its totient is φ = 115868339008.

The previous prime is 123110110181. The next prime is 123110110219. The reversal of 123110110213 is 312011011321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100231127649 + 22878982564 = 316593^2 + 151258^2 .

It is a cyclic number.

It is not a de Polignac number, because 123110110213 - 2⁵ = 123110110181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123110110219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3620885578 + ... + 3620885611.

It is an arithmetic number, because the mean of its divisors is an integer number (32587970355).

Almost surely, 2^123110110213 is an apocalyptic number.

It is an amenable number.

123110110213 is a deficient number, since it is larger than the sum of its proper divisors (7241771207).

123110110213 is an equidigital number, since it uses as much as digits as its factorization.

123110110213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241771206.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 123110110213 its reverse (312011011321), we get a palindrome (435121121534).

The spelling of 123110110213 in words is "one hundred twenty-three billion, one hundred ten million, one hundred ten thousand, two hundred thirteen".