121116601 has 4 divisors (see below), whose sum is σ = 121158900. Its totient is φ = 121074304.

The previous prime is 121116553. The next prime is 121116623. The reversal of 121116601 is 106611121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106611121 = 613 ⋅173917.

It can be written as a sum of positive squares in 2 ways, for example, as 113955625 + 7160976 = 10675^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 121116601 - 2²¹ = 119019449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121116701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16516 + ... + 22693.

It is an arithmetic number, because the mean of its divisors is an integer number (30289725).

Almost surely, 2^121116601 is an apocalyptic number.

It is an amenable number.

121116601 is a deficient number, since it is larger than the sum of its proper divisors (42299).

121116601 is an equidigital number, since it uses as much as digits as its factorization.

121116601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42298.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 121116601 is about 11005.2987692293. The cubic root of 121116601 is about 494.7675690054.

Adding to 121116601 its reverse (106611121), we get a palindrome (227727722).

The spelling of 121116601 in words is "one hundred twenty-one million, one hundred sixteen thousand, six hundred one".