11860121 has 24 divisors (see below), whose sum is σ = 15167040. Its totient is φ = 9028512.

The previous prime is 11860109. The next prime is 11860133. The reversal of 11860121 is 12106811.

It is an interprime number because it is at equal distance from previous prime (11860109) and next prime (11860133).

It is not a de Polignac number, because 11860121 - 2¹⁸ = 11597977 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11860093 and 11860102.

It is not an unprimeable number, because it can be changed into a prime (11860151) 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 23 ways as a sum of consecutive naturals, for example, 200990 + ... + 201048.

It is an arithmetic number, because the mean of its divisors is an integer number (631960).

Almost surely, 2^11860121 is an apocalyptic number.

It is an amenable number.

11860121 is a deficient number, since it is larger than the sum of its proper divisors (3306919).

11860121 is an equidigital number, since it uses as much as digits as its factorization.

11860121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 11860121 is about 3443.8526391238. The cubic root of 11860121 is about 228.0498057296.

Adding to 11860121 its reverse (12106811), we get a palindrome (23966932).

The spelling of 11860121 in words is "eleven million, eight hundred sixty thousand, one hundred twenty-one".