121210230123 has 24 divisors (see below), whose sum is σ = 180827494848. Its totient is φ = 78189923952.

The previous prime is 121210230107. The next prime is 121210230131. The reversal of 121210230123 is 321032012121.

It is not a de Polignac number, because 121210230123 - 2⁴ = 121210230107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121210230096 and 121210230105.

It is not an unprimeable number, because it can be changed into a prime (121210230173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1422165 + ... + 1504982.

It is an arithmetic number, because the mean of its divisors is an integer number (7534478952).

Almost surely, 2^121210230123 is an apocalyptic number.

121210230123 is a deficient number, since it is larger than the sum of its proper divisors (59617264725).

121210230123 is a wasteful number, since it uses less digits than its factorization.

121210230123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927303 (or 2927300 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121210230123 its reverse (321032012121), we get a palindrome (442242242244).

The spelling of 121210230123 in words is "one hundred twenty-one billion, two hundred ten million, two hundred thirty thousand, one hundred twenty-three".