121352185 has 4 divisors (see below), whose sum is σ = 145622628. Its totient is φ = 97081744.

The previous prime is 121352131. The next prime is 121352201. The reversal of 121352185 is 581253121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 581253121 = 439 ⋅1324039.

It can be written as a sum of positive squares in 2 ways, for example, as 87665769 + 33686416 = 9363^2 + 5804^2 .

It is a cyclic number.

It is not a de Polignac number, because 121352185 - 2¹¹ = 121350137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12135214 + ... + 12135223.

It is an arithmetic number, because the mean of its divisors is an integer number (36405657).

Almost surely, 2^121352185 is an apocalyptic number.

It is an amenable number.

121352185 is a deficient number, since it is larger than the sum of its proper divisors (24270443).

121352185 is an equidigital number, since it uses as much as digits as its factorization.

121352185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24270442.

The product of its digits is 2400, while the sum is 28.

The square root of 121352185 is about 11015.9967774142. The cubic root of 121352185 is about 495.0881521745.

The spelling of 121352185 in words is "one hundred twenty-one million, three hundred fifty-two thousand, one hundred eighty-five".