123030121013 has 4 divisors (see below), whose sum is σ = 129505390560. Its totient is φ = 116554851468.

The previous prime is 123030121009. The next prime is 123030121069. The reversal of 123030121013 is 310121030321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123030121013 - 2² = 123030121009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123030120982 and 123030121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030124013) 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, 3237634745 + ... + 3237634782.

It is an arithmetic number, because the mean of its divisors is an integer number (32376347640).

Almost surely, 2^123030121013 is an apocalyptic number.

It is an amenable number.

123030121013 is a deficient number, since it is larger than the sum of its proper divisors (6475269547).

123030121013 is an equidigital number, since it uses as much as digits as its factorization.

123030121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475269546.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 123030121013 its reverse (310121030321), we get a palindrome (433151151334).

The spelling of 123030121013 in words is "one hundred twenty-three billion, thirty million, one hundred twenty-one thousand, thirteen".