121425151 has 2 divisors, whose sum is σ = 121425152. Its totient is φ = 121425150.

The previous prime is 121425131. The next prime is 121425179. The reversal of 121425151 is 151524121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121425151 - 2²⁵ = 87870719 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121425121) 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, 60712575 + 60712576.

It is an arithmetic number, because the mean of its divisors is an integer number (60712576).

Almost surely, 2^121425151 is an apocalyptic number.

121425151 is a deficient number, since it is larger than the sum of its proper divisors (1).

121425151 is an equidigital number, since it uses as much as digits as its factorization.

121425151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 400, while the sum is 22.

The square root of 121425151 is about 11019.3080998763. The cubic root of 121425151 is about 495.1873602886.

Adding to 121425151 its reverse (151524121), we get a palindrome (272949272).

The spelling of 121425151 in words is "one hundred twenty-one million, four hundred twenty-five thousand, one hundred fifty-one".