121432351 has 2 divisors, whose sum is σ = 121432352. Its totient is φ = 121432350.

The previous prime is 121432331. The next prime is 121432369. The reversal of 121432351 is 153234121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121432351 - 2¹³ = 121424159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121432321) 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, 60716175 + 60716176.

It is an arithmetic number, because the mean of its divisors is an integer number (60716176).

Almost surely, 2^121432351 is an apocalyptic number.

121432351 is a deficient number, since it is larger than the sum of its proper divisors (1).

121432351 is an equidigital number, since it uses as much as digits as its factorization.

121432351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 121432351 is about 11019.6347943115. The cubic root of 121432351 is about 495.1971476034.

Adding to 121432351 its reverse (153234121), we get a palindrome (274666472).

The spelling of 121432351 in words is "one hundred twenty-one million, four hundred thirty-two thousand, three hundred fifty-one".