107818121 has 4 divisors (see below), whose sum is σ = 107854032. Its totient is φ = 107782212.

The previous prime is 107818091. The next prime is 107818127. The reversal of 107818121 is 121818701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121818701 = 1559 ⋅78139.

It is a cyclic number.

It is not a de Polignac number, because 107818121 - 2¹⁰ = 107817097 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (107818127) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12995 + ... + 19608.

It is an arithmetic number, because the mean of its divisors is an integer number (26963508).

Almost surely, 2^107818121 is an apocalyptic number.

It is an amenable number.

107818121 is a deficient number, since it is larger than the sum of its proper divisors (35911).

107818121 is an equidigital number, since it uses as much as digits as its factorization.

107818121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35910.

The product of its (nonzero) digits is 896, while the sum is 29.

The square root of 107818121 is about 10383.5505006717. The cubic root of 107818121 is about 475.9528367578.

The spelling of 107818121 in words is "one hundred seven million, eight hundred eighteen thousand, one hundred twenty-one".