121301103123 has 20 divisors (see below), whose sum is σ = 181265653008. Its totient is φ = 80839388880.

The previous prime is 121301103103. The next prime is 121301103149. The reversal of 121301103123 is 321301103121.

It is not a de Polignac number, because 121301103123 - 2¹⁶ = 121301037587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121301103096 and 121301103105.

It is not an unprimeable number, because it can be changed into a prime (121301103103) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22788 + ... + 493073.

Almost surely, 2^121301103123 is an apocalyptic number.

121301103123 is a deficient number, since it is larger than the sum of its proper divisors (59964549885).

121301103123 is an equidigital number, since it uses as much as digits as its factorization.

121301103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518776 (or 518767 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121301103123 its reverse (321301103121), we get a palindrome (442602206244).

The spelling of 121301103123 in words is "one hundred twenty-one billion, three hundred one million, one hundred three thousand, one hundred twenty-three".