122121110123 has 4 divisors (see below), whose sum is σ = 123666947040. Its totient is φ = 120575273208.

The previous prime is 122121110107. The next prime is 122121110143. The reversal of 122121110123 is 321011121221.

It is a happy number.

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 122121110123 - 2⁴ = 122121110107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122121110143) 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, 772918340 + ... + 772918497.

It is an arithmetic number, because the mean of its divisors is an integer number (30916736760).

Almost surely, 2^122121110123 is an apocalyptic number.

122121110123 is a deficient number, since it is larger than the sum of its proper divisors (1545836917).

122121110123 is an equidigital number, since it uses as much as digits as its factorization.

122121110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545836916.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 122121110123 its reverse (321011121221), we get a palindrome (443132231344).

The spelling of 122121110123 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty-three".