121244415 has 16 divisors (see below), whose sum is σ = 204201600. Its totient is φ = 61260192.

The previous prime is 121244413. The next prime is 121244419. The reversal of 121244415 is 514442121.

It is not a de Polignac number, because 121244415 - 2¹ = 121244413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121244413) 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 15 ways as a sum of consecutive naturals, for example, 212425 + ... + 212994.

It is an arithmetic number, because the mean of its divisors is an integer number (12762600).

Almost surely, 2^121244415 is an apocalyptic number.

121244415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121244415 is a deficient number, since it is larger than the sum of its proper divisors (82957185).

121244415 is a wasteful number, since it uses less digits than its factorization.

121244415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425446.

The product of its digits is 1280, while the sum is 24.

The square root of 121244415 is about 11011.1041680660. The cubic root of 121244415 is about 494.9415500824.

Adding to 121244415 its reverse (514442121), we get a palindrome (635686536).

The spelling of 121244415 in words is "one hundred twenty-one million, two hundred forty-four thousand, four hundred fifteen".