121233003233221 has 4 divisors (see below), whose sum is σ = 132254185345344. Its totient is φ = 110211821121100.

The previous prime is 121233003233191. The next prime is 121233003233227. The reversal of 121233003233221 is 122332300332121.

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 121233003233221 - 2⁹ = 121233003232709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121233003233221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233003233227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5510591056045 + ... + 5510591056066.

It is an arithmetic number, because the mean of its divisors is an integer number (33063546336336).

Almost surely, 2^{121233003233221} is an apocalyptic number.

121233003233221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121233003233221 is a deficient number, since it is larger than the sum of its proper divisors (11021182112123).

121233003233221 is a wasteful number, since it uses less digits than its factorization.

121233003233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021182112122.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 121233003233221 its reverse (122332300332121), we get a palindrome (243565303565342).

The spelling of 121233003233221 in words is "one hundred twenty-one trillion, two hundred thirty-three billion, three million, two hundred thirty-three thousand, two hundred twenty-one".