121110112123 has 16 divisors (see below), whose sum is σ = 162609382656. Its totient is φ = 87112167840.

The previous prime is 121110112111. The next prime is 121110112181. The reversal of 121110112123 is 321211011121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121110112123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121110112097 and 121110112106.

It is not an unprimeable number, because it can be changed into a prime (121110112103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60493561 + ... + 60495562.

It is an arithmetic number, because the mean of its divisors is an integer number (10163086416).

Almost surely, 2^121110112123 is an apocalyptic number.

121110112123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121110112123 is a deficient number, since it is larger than the sum of its proper divisors (41499270533).

121110112123 is a wasteful number, since it uses less digits than its factorization.

121110112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120989154.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121110112123 its reverse (321211011121), we get a palindrome (442321123244).

The spelling of 121110112123 in words is "one hundred twenty-one billion, one hundred ten million, one hundred twelve thousand, one hundred twenty-three".