121033331420243 has 24 divisors (see below), whose sum is σ = 133664737489920. Its totient is φ = 109511312279600.

The previous prime is 121033331420237. The next prime is 121033331420273. The reversal of 121033331420243 is 342024133330121.

It is not a de Polignac number, because 121033331420243 - 2¹⁶ = 121033331354707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121033331420273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52988996 + ... + 55225902.

It is an arithmetic number, because the mean of its divisors is an integer number (5569364062080).

Almost surely, 2^{121033331420243} is an apocalyptic number.

121033331420243 is a deficient number, since it is larger than the sum of its proper divisors (12631406069677).

121033331420243 is a wasteful number, since it uses less digits than its factorization.

121033331420243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239039 (or 2239028 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 121033331420243 its reverse (342024133330121), we get a palindrome (463057464750364).

The spelling of 121033331420243 in words is "one hundred twenty-one trillion, thirty-three billion, three hundred thirty-one million, four hundred twenty thousand, two hundred forty-three".