1320332002221 has 16 divisors (see below), whose sum is σ = 1837175316480. Its totient is φ = 841862997360.

The previous prime is 1320332002211. The next prime is 1320332002229. The reversal of 1320332002221 is 1222002330231.

It is a happy number.

It is not a de Polignac number, because 1320332002221 - 2⁵ = 1320332002189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320332002229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328881 + ... + 1657958.

It is an arithmetic number, because the mean of its divisors is an integer number (114823457280).

Almost surely, 2^{1320332002221} is an apocalyptic number.

It is an amenable number.

1320332002221 is a deficient number, since it is larger than the sum of its proper divisors (516843314259).

1320332002221 is a wasteful number, since it uses less digits than its factorization.

1320332002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996496.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1320332002221 its reverse (1222002330231), we get a palindrome (2542334332452).

The spelling of 1320332002221 in words is "one trillion, three hundred twenty billion, three hundred thirty-two million, two thousand, two hundred twenty-one".