121113030203123 has 4 divisors (see below), whose sum is σ = 138414891660720. Its totient is φ = 103811168745528.

The previous prime is 121113030203111. The next prime is 121113030203159. The reversal of 121113030203123 is 321302030311121.

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

It is a cyclic number.

It is not a de Polignac number, because 121113030203123 - 2¹⁴ = 121113030186739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121113030203323) 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, 8650930728788 + ... + 8650930728801.

It is an arithmetic number, because the mean of its divisors is an integer number (34603722915180).

Almost surely, 2^{121113030203123} is an apocalyptic number.

121113030203123 is a deficient number, since it is larger than the sum of its proper divisors (17301861457597).

121113030203123 is an equidigital number, since it uses as much as digits as its factorization.

121113030203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17301861457596.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121113030203123 its reverse (321302030311121), we get a palindrome (442415060514244).

The spelling of 121113030203123 in words is "one hundred twenty-one trillion, one hundred thirteen billion, thirty million, two hundred three thousand, one hundred twenty-three".