1320233040221 has 16 divisors (see below), whose sum is σ = 1380100300800. Its totient is φ = 1261341341568.

The previous prime is 1320233040179. The next prime is 1320233040227. The reversal of 1320233040221 is 1220403320231.

It is a cyclic number.

It is not a de Polignac number, because 1320233040221 - 2²² = 1320228845917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320233040227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3647585 + ... + 3993161.

It is an arithmetic number, because the mean of its divisors is an integer number (86256268800).

Almost surely, 2^{1320233040221} is an apocalyptic number.

It is an amenable number.

1320233040221 is a deficient number, since it is larger than the sum of its proper divisors (59867260579).

1320233040221 is a wasteful number, since it uses less digits than its factorization.

1320233040221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346988.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1320233040221 its reverse (1220403320231), we get a palindrome (2540636360452).

The spelling of 1320233040221 in words is "one trillion, three hundred twenty billion, two hundred thirty-three million, forty thousand, two hundred twenty-one".