320133225221 has 4 divisors (see below), whose sum is σ = 320148971532. Its totient is φ = 320117478912.

The previous prime is 320133225197. The next prime is 320133225227. The reversal of 320133225221 is 122522331023.

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

It can be written as a sum of positive squares in 2 ways, for example, as 122209672225 + 197923552996 = 349585^2 + 444886^2 .

It is a cyclic number.

It is not a de Polignac number, because 320133225221 - 2¹⁸ = 320132963077 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 (320133225227) 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, 7842620 + ... + 7883333.

It is an arithmetic number, because the mean of its divisors is an integer number (80037242883).

Almost surely, 2^320133225221 is an apocalyptic number.

It is an amenable number.

320133225221 is a deficient number, since it is larger than the sum of its proper divisors (15746311).

320133225221 is a wasteful number, since it uses less digits than its factorization.

320133225221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15746310.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 320133225221 its reverse (122522331023), we get a palindrome (442655556244).

The spelling of 320133225221 in words is "three hundred twenty billion, one hundred thirty-three million, two hundred twenty-five thousand, two hundred twenty-one".