121301505 has 48 divisors (see below), whose sum is σ = 228782736. Its totient is φ = 59097600.

The previous prime is 121301459. The next prime is 121301561. The reversal of 121301505 is 505103121.

It can be written as a sum of positive squares in 8 ways, for example, as 147456 + 121154049 = 384^2 + 11007^2 .

It is not a de Polignac number, because 121301505 - 2⁸ = 121301249 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58059 + ... + 60111.

It is an arithmetic number, because the mean of its divisors is an integer number (4766307).

Almost surely, 2^121301505 is an apocalyptic number.

121301505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121301505 is a deficient number, since it is larger than the sum of its proper divisors (107481231).

121301505 is a wasteful number, since it uses less digits than its factorization.

121301505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 121301505 is about 11013.6962460384. The cubic root of 121301505 is about 495.0192217819.

Adding to 121301505 its reverse (505103121), we get a palindrome (626404626).

The spelling of 121301505 in words is "one hundred twenty-one million, three hundred one thousand, five hundred five".