120101210123 has 2 divisors, whose sum is σ = 120101210124. Its totient is φ = 120101210122.

The previous prime is 120101210107. The next prime is 120101210149. The reversal of 120101210123 is 321012101021.

It is a weak prime.

It is an emirp because it is prime and its reverse (321012101021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120101210123 - 2⁴ = 120101210107 is a prime.

It is a super-3 number, since 3×120101210123³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120101210098 and 120101210107.

It is not a weakly prime, because it can be changed into another prime (120101210923) 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 as a sum of consecutive naturals, namely, 60050605061 + 60050605062.

It is an arithmetic number, because the mean of its divisors is an integer number (60050605062).

Almost surely, 2^120101210123 is an apocalyptic number.

120101210123 is a deficient number, since it is larger than the sum of its proper divisors (1).

120101210123 is an equidigital number, since it uses as much as digits as its factorization.

120101210123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 120101210123 its reverse (321012101021), we get a palindrome (441113311144).

The spelling of 120101210123 in words is "one hundred twenty billion, one hundred one million, two hundred ten thousand, one hundred twenty-three".