121120123 has 2 divisors, whose sum is σ = 121120124. Its totient is φ = 121120122.

The previous prime is 121120099. The next prime is 121120133. The reversal of 121120123 is 321021121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121120123 - 2⁵ = 121120091 is a prime.

It is not a weakly prime, because it can be changed into another prime (121120133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560061 + 60560062.

It is an arithmetic number, because the mean of its divisors is an integer number (60560062).

Almost surely, 2^121120123 is an apocalyptic number.

121120123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120123 is an equidigital number, since it uses as much as digits as its factorization.

121120123 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 13.

The square root of 121120123 is about 11005.4587818955. The cubic root of 121120123 is about 494.7723648096.

Adding to 121120123 its reverse (321021121), we get a palindrome (442141244).

The spelling of 121120123 in words is "one hundred twenty-one million, one hundred twenty thousand, one hundred twenty-three".