120203231220123 has 4 divisors (see below), whose sum is σ = 160270974960168. Its totient is φ = 80135487480080.

The previous prime is 120203231220043. The next prime is 120203231220131. The reversal of 120203231220123 is 321022132302021.

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 120203231220123 - 2²⁶ = 120203164111259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120203231220093 and 120203231220102.

It is not an unprimeable number, because it can be changed into a prime (120203231220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20033871870018 + ... + 20033871870023.

It is an arithmetic number, because the mean of its divisors is an integer number (40067743740042).

Almost surely, 2^{120203231220123} is an apocalyptic number.

120203231220123 is a deficient number, since it is larger than the sum of its proper divisors (40067743740045).

120203231220123 is an equidigital number, since it uses as much as digits as its factorization.

120203231220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40067743740044.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 120203231220123 its reverse (321022132302021), we get a palindrome (441225363522144).

The spelling of 120203231220123 in words is "one hundred twenty trillion, two hundred three billion, two hundred thirty-one million, two hundred twenty thousand, one hundred twenty-three".