121330033320221 has 24 divisors (see below), whose sum is σ = 136318608986112. Its totient is φ = 107859424508000.

The previous prime is 121330033320149. The next prime is 121330033320227. The reversal of 121330033320221 is 122023330033121.

It is not a de Polignac number, because 121330033320221 - 2²² = 121330029125917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121330033320227) 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 23 ways as a sum of consecutive naturals, for example, 2722130 + ... + 15813603.

It is an arithmetic number, because the mean of its divisors is an integer number (5679942041088).

Almost surely, 2^{121330033320221} is an apocalyptic number.

121330033320221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121330033320221 is a deficient number, since it is larger than the sum of its proper divisors (14988575665891).

121330033320221 is a wasteful number, since it uses less digits than its factorization.

121330033320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18536953 (or 18536942 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 121330033320221 its reverse (122023330033121), we get a palindrome (243353363353342).

The spelling of 121330033320221 in words is "one hundred twenty-one trillion, three hundred thirty billion, thirty-three million, three hundred twenty thousand, two hundred twenty-one".