121285583 has 2 divisors, whose sum is σ = 121285584. Its totient is φ = 121285582.

The previous prime is 121285561. The next prime is 121285597. The reversal of 121285583 is 385582121.

It is a strong prime.

It is an emirp because it is prime and its reverse (385582121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121285583 - 2²⁶ = 54176719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121285513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60642791 + 60642792.

It is an arithmetic number, because the mean of its divisors is an integer number (60642792).

Almost surely, 2^121285583 is an apocalyptic number.

121285583 is a deficient number, since it is larger than the sum of its proper divisors (1).

121285583 is an equidigital number, since it uses as much as digits as its factorization.

121285583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19200, while the sum is 35.

The square root of 121285583 is about 11012.9733950464. The cubic root of 121285583 is about 494.9975621415.

It can be divided in two parts, 121 and 285583, that multiplied together give a palindrome (34555543).

The spelling of 121285583 in words is "one hundred twenty-one million, two hundred eighty-five thousand, five hundred eighty-three".