121020011120123 has 2 divisors, whose sum is σ = 121020011120124. Its totient is φ = 121020011120122.

The previous prime is 121020011120089. The next prime is 121020011120179. The reversal of 121020011120123 is 321021110020121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121020011120123 - 2²⁸ = 121019742684667 is a prime.

It is not a weakly prime, because it can be changed into another prime (121020011122123) 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 as a sum of consecutive naturals, namely, 60510005560061 + 60510005560062.

It is an arithmetic number, because the mean of its divisors is an integer number (60510005560062).

Almost surely, 2^{121020011120123} is an apocalyptic number.

121020011120123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020011120123 is an equidigital number, since it uses as much as digits as its factorization.

121020011120123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121020011120123 its reverse (321021110020121), we get a palindrome (442041121140244).

The spelling of 121020011120123 in words is "one hundred twenty-one trillion, twenty billion, eleven million, one hundred twenty thousand, one hundred twenty-three".