123212030113 has 4 divisors (see below), whose sum is σ = 123213677188. Its totient is φ = 123210383040.

The previous prime is 123212030099. The next prime is 123212030131. The reversal of 123212030113 is 311030212321.

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 68482702864 + 54729327249 = 261692^2 + 233943^2 .

It is a cyclic number.

It is not a de Polignac number, because 123212030113 - 2⁹ = 123212029601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123212030413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705708 + ... + 862813.

It is an arithmetic number, because the mean of its divisors is an integer number (30803419297).

Almost surely, 2^123212030113 is an apocalyptic number.

It is an amenable number.

123212030113 is a deficient number, since it is larger than the sum of its proper divisors (1647075).

123212030113 is an equidigital number, since it uses as much as digits as its factorization.

123212030113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647074.

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

Adding to 123212030113 its reverse (311030212321), we get a palindrome (434242242434).

The spelling of 123212030113 in words is "one hundred twenty-three billion, two hundred twelve million, thirty thousand, one hundred thirteen".