1320212120321 has 8 divisors (see below), whose sum is σ = 1329430536000. Its totient is φ = 1310998477360.

The previous prime is 1320212120273. The next prime is 1320212120323. The reversal of 1320212120321 is 1230212120231.

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 1320212120321 - 2¹⁰ = 1320212119297 is a prime.

It is a super-2 number, since 2×1320212120321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320212120293 and 1320212120302.

It is not an unprimeable number, because it can be changed into a prime (1320212120323) 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, 637115 + ... + 1745376.

It is an arithmetic number, because the mean of its divisors is an integer number (166178817000).

Almost surely, 2^{1320212120321} is an apocalyptic number.

It is an amenable number.

1320212120321 is a deficient number, since it is larger than the sum of its proper divisors (9218415679).

1320212120321 is a wasteful number, since it uses less digits than its factorization.

1320212120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386359.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1320212120321 its reverse (1230212120231), we get a palindrome (2550424240552).

The spelling of 1320212120321 in words is "one trillion, three hundred twenty billion, two hundred twelve million, one hundred twenty thousand, three hundred twenty-one".