121333431312241 has 4 divisors (see below), whose sum is σ = 122795279882352. Its totient is φ = 119871582742132.

The previous prime is 121333431312133. The next prime is 121333431312253. The reversal of 121333431312241 is 142213134333121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121333431312241 - 2⁷ = 121333431312113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121333431312197 and 121333431312206.

It is not an unprimeable number, because it can be changed into a prime (121333431312641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730924284931 + ... + 730924285096.

It is an arithmetic number, because the mean of its divisors is an integer number (30698819970588).

Almost surely, 2^{121333431312241} is an apocalyptic number.

It is an amenable number.

121333431312241 is a deficient number, since it is larger than the sum of its proper divisors (1461848570111).

121333431312241 is an equidigital number, since it uses as much as digits as its factorization.

121333431312241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461848570110.

The product of its digits is 31104, while the sum is 34.

Adding to 121333431312241 its reverse (142213134333121), we get a palindrome (263546565645362).

The spelling of 121333431312241 in words is "one hundred twenty-one trillion, three hundred thirty-three billion, four hundred thirty-one million, three hundred twelve thousand, two hundred forty-one".