122120312123 has 4 divisors (see below), whose sum is σ = 122122906848. Its totient is φ = 122117717400.

The previous prime is 122120312099. The next prime is 122120312189. The reversal of 122120312123 is 321213021221.

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 122120312123 - 2⁸ = 122120311867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122120312095 and 122120312104.

It is not an unprimeable number, because it can be changed into a prime (122120312723) 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, 1225436 + ... + 1321337.

It is an arithmetic number, because the mean of its divisors is an integer number (30530726712).

Almost surely, 2^122120312123 is an apocalyptic number.

122120312123 is a deficient number, since it is larger than the sum of its proper divisors (2594725).

122120312123 is an equidigital number, since it uses as much as digits as its factorization.

122120312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594724.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 122120312123 its reverse (321213021221), we get a palindrome (443333333344).

The spelling of 122120312123 in words is "one hundred twenty-two billion, one hundred twenty million, three hundred twelve thousand, one hundred twenty-three".