1320213421322 has 4 divisors (see below), whose sum is σ = 1980320131986. Its totient is φ = 660106710660.

The previous prime is 1320213421321. The next prime is 1320213421339. The reversal of 1320213421322 is 2231243120231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 669256522561 + 650956898761 = 818081^2 + 806819^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1320213421291 and 1320213421300.

It is not an unprimeable number, because it can be changed into a prime (1320213421321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330053355329 + ... + 330053355332.

Almost surely, 2^{1320213421322} is an apocalyptic number.

1320213421322 is a deficient number, since it is larger than the sum of its proper divisors (660106710664).

1320213421322 is an equidigital number, since it uses as much as digits as its factorization.

1320213421322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660106710663.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1320213421322 its reverse (2231243120231), we get a palindrome (3551456541553).

The spelling of 1320213421322 in words is "one trillion, three hundred twenty billion, two hundred thirteen million, four hundred twenty-one thousand, three hundred twenty-two".