121333211221 has 8 divisors (see below), whose sum is σ = 121843382400. Its totient is φ = 120824040960.

The previous prime is 121333211213. The next prime is 121333211231. The reversal of 121333211221 is 122112333121.

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 121333211221 - 2³ = 121333211213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121333211192 and 121333211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121333211201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6781 + ... + 492658.

It is an arithmetic number, because the mean of its divisors is an integer number (15230422800).

Almost surely, 2^121333211221 is an apocalyptic number.

It is an amenable number.

121333211221 is a deficient number, since it is larger than the sum of its proper divisors (510171179).

121333211221 is an equidigital number, since it uses as much as digits as its factorization.

121333211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500459.

The product of its digits is 432, while the sum is 22.

Adding to 121333211221 its reverse (122112333121), we get a palindrome (243445544342).

The spelling of 121333211221 in words is "one hundred twenty-one billion, three hundred thirty-three million, two hundred eleven thousand, two hundred twenty-one".