121304255 has 4 divisors (see below), whose sum is σ = 145565112. Its totient is φ = 97043400.

The previous prime is 121304219. The next prime is 121304269. The reversal of 121304255 is 552403121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121304255 - 2¹² = 121300159 is a prime.

It is a super-2 number, since 2×121304255² = 29429444562210050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121304255.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 12130421 + ... + 12130430.

It is an arithmetic number, because the mean of its divisors is an integer number (36391278).

Almost surely, 2^121304255 is an apocalyptic number.

121304255 is a deficient number, since it is larger than the sum of its proper divisors (24260857).

121304255 is an equidigital number, since it uses as much as digits as its factorization.

121304255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24260856.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 121304255 is about 11013.8210898852. The cubic root of 121304255 is about 495.0229625779.

Adding to 121304255 its reverse (552403121), we get a palindrome (673707376).

The spelling of 121304255 in words is "one hundred twenty-one million, three hundred four thousand, two hundred fifty-five".