1331221223321 has 8 divisors (see below), whose sum is σ = 1452384774144. Its totient is φ = 1210081579120.

The previous prime is 1331221223291. The next prime is 1331221223333. The reversal of 1331221223321 is 1233221221331.

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 1331221223321 - 2¹⁰ = 1331221222297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331221223341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5860121 + ... + 6083046.

It is an arithmetic number, because the mean of its divisors is an integer number (181548096768).

Almost surely, 2^{1331221223321} is an apocalyptic number.

1331221223321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1331221223321 is a deficient number, since it is larger than the sum of its proper divisors (121163550823).

1331221223321 is a wasteful number, since it uses less digits than its factorization.

1331221223321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11953311.

The product of its digits is 2592, while the sum is 26.

Adding to 1331221223321 its reverse (1233221221331), we get a palindrome (2564442444652).

The spelling of 1331221223321 in words is "one trillion, three hundred thirty-one billion, two hundred twenty-one million, two hundred twenty-three thousand, three hundred twenty-one".