121220133742043 has 8 divisors (see below), whose sum is σ = 138549721778400. Its totient is φ = 103893652224000.

The previous prime is 121220133742039. The next prime is 121220133742051. The reversal of 121220133742043 is 340247331022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121220133742043 - 2² = 121220133742039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121220133741994 and 121220133742012.

It is not an unprimeable number, because it can be changed into a prime (121220133742033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776545958 + ... + 776702043.

It is an arithmetic number, because the mean of its divisors is an integer number (17318715222300).

Almost surely, 2^{121220133742043} is an apocalyptic number.

121220133742043 is a deficient number, since it is larger than the sum of its proper divisors (17329588036357).

121220133742043 is a wasteful number, since it uses less digits than its factorization.

121220133742043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553259157.

The product of its (nonzero) digits is 48384, while the sum is 35.

Adding to 121220133742043 its reverse (340247331022121), we get a palindrome (461467464764164).

The spelling of 121220133742043 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred thirty-three million, seven hundred forty-two thousand, forty-three".