1221010321333 has 8 divisors (see below), whose sum is σ = 1410364863360. Its totient is φ = 1044714713280.

The previous prime is 1221010321283. The next prime is 1221010321369. The reversal of 1221010321333 is 3331230101221.

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 1221010321333 - 2⁹ = 1221010320821 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 (1221010321393) 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 7 ways as a sum of consecutive naturals, for example, 3264733293 + ... + 3264733666.

It is an arithmetic number, because the mean of its divisors is an integer number (176295607920).

Almost surely, 2^{1221010321333} is an apocalyptic number.

It is an amenable number.

1221010321333 is a deficient number, since it is larger than the sum of its proper divisors (189354542027).

1221010321333 is a wasteful number, since it uses less digits than its factorization.

1221010321333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529466987.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1221010321333 its reverse (3331230101221), we get a palindrome (4552240422554).

The spelling of 1221010321333 in words is "one trillion, two hundred twenty-one billion, ten million, three hundred twenty-one thousand, three hundred thirty-three".