121332304442243 has 4 divisors (see below), whose sum is σ = 122445444850080. Its totient is φ = 120219164034408.

The previous prime is 121332304442203. The next prime is 121332304442263. The reversal of 121332304442243 is 342244403233121.

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 121332304442243 - 2⁶ = 121332304442179 is a prime.

It is a super-5 number, since 5×121332304442243⁵ (a number of 72 digits) contains 55555 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121332304442197 and 121332304442206.

It is not an unprimeable number, because it can be changed into a prime (121332304442203) 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, 556570203755 + ... + 556570203972.

It is an arithmetic number, because the mean of its divisors is an integer number (30611361212520).

Almost surely, 2^{121332304442243} is an apocalyptic number.

121332304442243 is a deficient number, since it is larger than the sum of its proper divisors (1113140407837).

121332304442243 is a wasteful number, since it uses less digits than its factorization.

121332304442243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113140407836.

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 121332304442243 its reverse (342244403233121), we get a palindrome (463576707675364).

The spelling of 121332304442243 in words is "one hundred twenty-one trillion, three hundred thirty-two billion, three hundred four million, four hundred forty-two thousand, two hundred forty-three".