121827361 has 4 divisors (see below), whose sum is σ = 122445972. Its totient is φ = 121208752.

The previous prime is 121827331. The next prime is 121827379. The reversal of 121827361 is 163728121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118048225 + 3779136 = 10865^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 121827361 - 2¹¹ = 121825313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121827331) 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 3 ways as a sum of consecutive naturals, for example, 309010 + ... + 309403.

It is an arithmetic number, because the mean of its divisors is an integer number (30611493).

Almost surely, 2^121827361 is an apocalyptic number.

It is an amenable number.

121827361 is a deficient number, since it is larger than the sum of its proper divisors (618611).

121827361 is an equidigital number, since it uses as much as digits as its factorization.

121827361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618610.

The product of its digits is 4032, while the sum is 31.

The square root of 121827361 is about 11037.5432501984. The cubic root of 121827361 is about 495.7335123835.

The spelling of 121827361 in words is "one hundred twenty-one million, eight hundred twenty-seven thousand, three hundred sixty-one".