121223140044343 has 4 divisors (see below), whose sum is σ = 123277769536680. Its totient is φ = 119168510552008.

The previous prime is 121223140044317. The next prime is 121223140044527. The reversal of 121223140044343 is 343440041322121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121223140044343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121223140044299 and 121223140044308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121223140041343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027314746080 + ... + 1027314746197.

It is an arithmetic number, because the mean of its divisors is an integer number (30819442384170).

Almost surely, 2^{121223140044343} is an apocalyptic number.

121223140044343 is a deficient number, since it is larger than the sum of its proper divisors (2054629492337).

121223140044343 is an equidigital number, since it uses as much as digits as its factorization.

121223140044343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054629492336.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 121223140044343 its reverse (343440041322121), we get a palindrome (464663181366464).

The spelling of 121223140044343 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, one hundred forty million, forty-four thousand, three hundred forty-three".