121306841 has 4 divisors (see below), whose sum is σ = 121454352. Its totient is φ = 121159332.

The previous prime is 121306819. The next prime is 121306847. The reversal of 121306841 is 148603121.

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: 148603121 = 271 ⋅548351.

It is a cyclic number.

It is not a de Polignac number, because 121306841 - 2¹⁴ = 121290457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121306841.

It is not an unprimeable number, because it can be changed into a prime (121306847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72515 + ... + 74168.

It is an arithmetic number, because the mean of its divisors is an integer number (30363588).

Almost surely, 2^121306841 is an apocalyptic number.

It is an amenable number.

121306841 is a deficient number, since it is larger than the sum of its proper divisors (147511).

121306841 is an equidigital number, since it uses as much as digits as its factorization.

121306841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147510.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 121306841 is about 11013.9384872079. The cubic root of 121306841 is about 495.0264802349.

Adding to 121306841 its reverse (148603121), we get a palindrome (269909962).

The spelling of 121306841 in words is "one hundred twenty-one million, three hundred six thousand, eight hundred forty-one".