121401115 has 24 divisors (see below), whose sum is σ = 165320064. Its totient is φ = 85430400.

The previous prime is 121401109. The next prime is 121401149. The reversal of 121401115 is 511104121.

It is not a de Polignac number, because 121401115 - 2¹¹ = 121399067 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 15519 + ... + 21991.

It is an arithmetic number, because the mean of its divisors is an integer number (6888336).

Almost surely, 2^121401115 is an apocalyptic number.

121401115 is a deficient number, since it is larger than the sum of its proper divisors (43918949).

121401115 is a wasteful number, since it uses less digits than its factorization.

121401115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6531 (or 6520 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 121401115 is about 11018.2174148090. The cubic root of 121401115 is about 495.1546841675.

Adding to 121401115 its reverse (511104121), we get a palindrome (632505236).

The spelling of 121401115 in words is "one hundred twenty-one million, four hundred one thousand, one hundred fifteen".