121232173 has 2 divisors, whose sum is σ = 121232174. Its totient is φ = 121232172.

The previous prime is 121232159. The next prime is 121232191. The reversal of 121232173 is 371232121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116575209 + 4656964 = 10797^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 121232173 - 2⁹ = 121231661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121232123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616086 + 60616087.

It is an arithmetic number, because the mean of its divisors is an integer number (60616087).

Almost surely, 2^121232173 is an apocalyptic number.

It is an amenable number.

121232173 is a deficient number, since it is larger than the sum of its proper divisors (1).

121232173 is an equidigital number, since it uses as much as digits as its factorization.

121232173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 121232173 is about 11010.5482606453. The cubic root of 121232173 is about 494.9248915051.

Adding to 121232173 its reverse (371232121), we get a palindrome (492464294).

The spelling of 121232173 in words is "one hundred twenty-one million, two hundred thirty-two thousand, one hundred seventy-three".