121232123 has 2 divisors, whose sum is σ = 121232124. Its totient is φ = 121232122.

The previous prime is 121232119. The next prime is 121232143. The reversal of 121232123 is 321232121.

121232123 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121232123 - 2² = 121232119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (121232143) 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, 60616061 + 60616062.

It is an arithmetic number, because the mean of its divisors is an integer number (60616062).

Almost surely, 2^121232123 is an apocalyptic number.

121232123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121232123 is an equidigital number, since it uses as much as digits as its factorization.

121232123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 121232123 is about 11010.5459900951. The cubic root of 121232123 is about 494.9248234642.

Adding to 121232123 its reverse (321232121), we get a palindrome (442464244).

The spelling of 121232123 in words is "one hundred twenty-one million, two hundred thirty-two thousand, one hundred twenty-three".