121021343 has 2 divisors, whose sum is σ = 121021344. Its totient is φ = 121021342.

The previous prime is 121021333. The next prime is 121021349. The reversal of 121021343 is 343120121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121021343 - 2¹⁴ = 121004959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121021349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510671 + 60510672.

It is an arithmetic number, because the mean of its divisors is an integer number (60510672).

Almost surely, 2^121021343 is an apocalyptic number.

121021343 is a deficient number, since it is larger than the sum of its proper divisors (1).

121021343 is an equidigital number, since it uses as much as digits as its factorization.

121021343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121021343 is about 11000.9700935872. The cubic root of 121021343 is about 494.6378237018.

Adding to 121021343 its reverse (343120121), we get a palindrome (464141464).

The spelling of 121021343 in words is "one hundred twenty-one million, twenty-one thousand, three hundred forty-three".