121112222123 has 2 divisors, whose sum is σ = 121112222124. Its totient is φ = 121112222122.

The previous prime is 121112222107. The next prime is 121112222141. The reversal of 121112222123 is 321222211121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121112222123 - 2⁴ = 121112222107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121112222095 and 121112222104.

It is not a weakly prime, because it can be changed into another prime (121112222173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556111061 + 60556111062.

It is an arithmetic number, because the mean of its divisors is an integer number (60556111062).

Almost surely, 2^121112222123 is an apocalyptic number.

121112222123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112222123 is an equidigital number, since it uses as much as digits as its factorization.

121112222123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 20.

Adding to 121112222123 its reverse (321222211121), we get a palindrome (442334433244).

The spelling of 121112222123 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-three".