120210210123 has 4 divisors (see below), whose sum is σ = 160280280168. Its totient is φ = 80140140080.

The previous prime is 120210210047. The next prime is 120210210139. The reversal of 120210210123 is 321012012021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321012012021 = 3 ⋅107004004007.

It is a cyclic number.

It is not a de Polignac number, because 120210210123 - 2²⁰ = 120209161547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120210210143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20035035018 + ... + 20035035023.

It is an arithmetic number, because the mean of its divisors is an integer number (40070070042).

Almost surely, 2^120210210123 is an apocalyptic number.

120210210123 is a deficient number, since it is larger than the sum of its proper divisors (40070070045).

120210210123 is an equidigital number, since it uses as much as digits as its factorization.

120210210123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40070070044.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 120210210123 its reverse (321012012021), we get a palindrome (441222222144).

The spelling of 120210210123 in words is "one hundred twenty billion, two hundred ten million, two hundred ten thousand, one hundred twenty-three".