1320032202221 has 4 divisors (see below), whose sum is σ = 1322072438112. Its totient is φ = 1317991966332.

The previous prime is 1320032202199. The next prime is 1320032202253. The reversal of 1320032202221 is 1222022300231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320032202221 - 2²⁶ = 1319965093357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320032202193 and 1320032202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320032202721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020116975 + ... + 1020118268.

It is an arithmetic number, because the mean of its divisors is an integer number (330518109528).

Almost surely, 2^{1320032202221} is an apocalyptic number.

It is an amenable number.

1320032202221 is a deficient number, since it is larger than the sum of its proper divisors (2040235891).

1320032202221 is an equidigital number, since it uses as much as digits as its factorization.

1320032202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040235890.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1320032202221 its reverse (1222022300231), we get a palindrome (2542054502452).

The spelling of 1320032202221 in words is "one trillion, three hundred twenty billion, thirty-two million, two hundred two thousand, two hundred twenty-one".