121548315 has 32 divisors (see below), whose sum is σ = 227437056. Its totient is φ = 54270720.

The previous prime is 121548311. The next prime is 121548331. The reversal of 121548315 is 513845121.

It is not a de Polignac number, because 121548315 - 2² = 121548311 is a prime.

It is a super-3 number, since 3×121548315³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121548311) 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 in 31 ways as a sum of consecutive naturals, for example, 8946 + ... + 17975.

It is an arithmetic number, because the mean of its divisors is an integer number (7107408).

Almost surely, 2^121548315 is an apocalyptic number.

121548315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121548315 is a deficient number, since it is larger than the sum of its proper divisors (105888741).

121548315 is a wasteful number, since it uses less digits than its factorization.

121548315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26979.

The product of its digits is 4800, while the sum is 30.

The square root of 121548315 is about 11024.8952375975. The cubic root of 121548315 is about 495.3547299158.

The spelling of 121548315 in words is "one hundred twenty-one million, five hundred forty-eight thousand, three hundred fifteen".