121333243 has 2 divisors, whose sum is σ = 121333244. Its totient is φ = 121333242.

The previous prime is 121333231. The next prime is 121333253. The reversal of 121333243 is 342333121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121333243 - 2¹⁷ = 121202171 is a prime.

It is not a weakly prime, because it can be changed into another prime (121333253) 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 as a sum of consecutive naturals, namely, 60666621 + 60666622.

It is an arithmetic number, because the mean of its divisors is an integer number (60666622).

Almost surely, 2^121333243 is an apocalyptic number.

121333243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121333243 is an equidigital number, since it uses as much as digits as its factorization.

121333243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 22.

The square root of 121333243 is about 11015.1369941549. The cubic root of 121333243 is about 495.0623912106.

Adding to 121333243 its reverse (342333121), we get a palindrome (463666364).

It can be divided in two parts, 12133 and 3243, that added together give a square (15376 = 124²).

The spelling of 121333243 in words is "one hundred twenty-one million, three hundred thirty-three thousand, two hundred forty-three".