121013303123 has 4 divisors (see below), whose sum is σ = 127382424360. Its totient is φ = 114644181888.

The previous prime is 121013303119. The next prime is 121013303129. The reversal of 121013303123 is 321303310121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321303310121 = 17 ⋅18900194713.

It is a cyclic number.

It is not a de Polignac number, because 121013303123 - 2² = 121013303119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121013303095 and 121013303104.

It is not an unprimeable number, because it can be changed into a prime (121013303129) 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, 3184560590 + ... + 3184560627.

It is an arithmetic number, because the mean of its divisors is an integer number (31845606090).

Almost surely, 2^121013303123 is an apocalyptic number.

121013303123 is a deficient number, since it is larger than the sum of its proper divisors (6369121237).

121013303123 is an equidigital number, since it uses as much as digits as its factorization.

121013303123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6369121236.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 121013303123 its reverse (321303310121), we get a palindrome (442316613244).

The spelling of 121013303123 in words is "one hundred twenty-one billion, thirteen million, three hundred three thousand, one hundred twenty-three".