121000121112123 has 12 divisors (see below), whose sum is σ = 190666857510168. Its totient is φ = 73333406734560.

The previous prime is 121000121112077. The next prime is 121000121112151. The reversal of 121000121112123 is 321211121000121.

It is a happy number.

It is not a de Polignac number, because 121000121112123 - 2³⁸ = 120725243205179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121000121112096 and 121000121112105.

It is not an unprimeable number, because it can be changed into a prime (121000121112323) 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 11 ways as a sum of consecutive naturals, for example, 611111722690 + ... + 611111722887.

It is an arithmetic number, because the mean of its divisors is an integer number (15888904792514).

Almost surely, 2^{121000121112123} is an apocalyptic number.

121000121112123 is a deficient number, since it is larger than the sum of its proper divisors (69666736398045).

121000121112123 is a wasteful number, since it uses less digits than its factorization.

121000121112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222223445594 (or 1222223445591 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 121000121112123 its reverse (321211121000121), we get a palindrome (442211242112244).

The spelling of 121000121112123 in words is "one hundred twenty-one trillion, one hundred twenty-one million, one hundred twelve thousand, one hundred twenty-three".