11678121 has 64 divisors (see below), whose sum is σ = 21952000. Its totient is φ = 6096384.

The previous prime is 11678113. The next prime is 11678129. The reversal of 11678121 is 12187611.

It is an interprime number because it is at equal distance from previous prime (11678113) and next prime (11678129).

It is not a de Polignac number, because 11678121 - 2³ = 11678113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11678129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120345 + ... + 120441.

It is an arithmetic number, because the mean of its divisors is an integer number (343000).

Almost surely, 2^11678121 is an apocalyptic number.

It is an amenable number.

11678121 is a deficient number, since it is larger than the sum of its proper divisors (10273879).

11678121 is an equidigital number, since it uses as much as digits as its factorization.

11678121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 120 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 11678121 is about 3417.3265866756. The cubic root of 11678121 is about 226.8772713385.

The spelling of 11678121 in words is "eleven million, six hundred seventy-eight thousand, one hundred twenty-one".