1320221420032 has 20 divisors (see below), whose sum is σ = 2637864283626. Its totient is φ = 660110709760.

The previous prime is 1320221419987. The next prime is 1320221420047. The reversal of 1320221420032 is 2300241220231.

It can be written as a sum of positive squares in only one way, i.e., 949174753536 + 371046666496 = 974256^2 + 609136^2 .

It is a super-2 number, since 2×1320221420032² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320221419985 and 1320221420012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289278219 + ... + 1289279242.

Almost surely, 2^{1320221420032} is an apocalyptic number.

It is an amenable number.

1320221420032 is a deficient number, since it is larger than the sum of its proper divisors (1317642863594).

1320221420032 is an frugal number, since it uses more digits than its factorization.

1320221420032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578557479 (or 2578557463 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1320221420032 its reverse (2300241220231), we get a palindrome (3620462640263).

The spelling of 1320221420032 in words is "one trillion, three hundred twenty billion, two hundred twenty-one million, four hundred twenty thousand, thirty-two".