121020343 has 4 divisors (see below), whose sum is σ = 121115520. Its totient is φ = 120925168.

The previous prime is 121020307. The next prime is 121020371. The reversal of 121020343 is 343020121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121020343 - 2⁹ = 121019831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020143) 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, 45655 + ... + 48232.

It is an arithmetic number, because the mean of its divisors is an integer number (30278880).

Almost surely, 2^121020343 is an apocalyptic number.

121020343 is a deficient number, since it is larger than the sum of its proper divisors (95177).

121020343 is an equidigital number, since it uses as much as digits as its factorization.

121020343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95176.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 121020343 is about 11000.9246429562. The cubic root of 121020343 is about 494.6364612997.

Adding to 121020343 its reverse (343020121), we get a palindrome (464040464).

The spelling of 121020343 in words is "one hundred twenty-one million, twenty thousand, three hundred forty-three".