121040322243 has 4 divisors (see below), whose sum is σ = 161387096328. Its totient is φ = 80693548160.

The previous prime is 121040322233. The next prime is 121040322251. The reversal of 121040322243 is 342223040121.

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 121040322243 - 2¹⁰ = 121040321219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121040322203) 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, 20173387038 + ... + 20173387043.

It is an arithmetic number, because the mean of its divisors is an integer number (40346774082).

Almost surely, 2^121040322243 is an apocalyptic number.

121040322243 is a deficient number, since it is larger than the sum of its proper divisors (40346774085).

121040322243 is an equidigital number, since it uses as much as digits as its factorization.

121040322243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40346774084.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 121040322243 its reverse (342223040121), we get a palindrome (463263362364).

The spelling of 121040322243 in words is "one hundred twenty-one billion, forty million, three hundred twenty-two thousand, two hundred forty-three".