121825783 has 2 divisors, whose sum is σ = 121825784. Its totient is φ = 121825782.

The previous prime is 121825763. The next prime is 121825799. The reversal of 121825783 is 387528121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121825783 - 2⁹ = 121825271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121825763) 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, 60912891 + 60912892.

It is an arithmetic number, because the mean of its divisors is an integer number (60912892).

Almost surely, 2^121825783 is an apocalyptic number.

121825783 is a deficient number, since it is larger than the sum of its proper divisors (1).

121825783 is an equidigital number, since it uses as much as digits as its factorization.

121825783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 121825783 is about 11037.4717666683. The cubic root of 121825783 is about 495.7313720027.

The spelling of 121825783 in words is "one hundred twenty-one million, eight hundred twenty-five thousand, seven hundred eighty-three".