320432341221 has 6 divisors (see below), whose sum is σ = 462846715110. Its totient is φ = 213621560808.

The previous prime is 320432341217. The next prime is 320432341249. The reversal of 320432341221 is 122143234023.

320432341221 is a `hidden beast` number, since 3 + 2 + 0 + 432 + 3 + 4 + 1 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 172602857025 + 147829484196 = 415455^2 + 384486^2 .

It is not a de Polignac number, because 320432341221 - 2² = 320432341217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320432351221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17801796726 + ... + 17801796743.

It is an arithmetic number, because the mean of its divisors is an integer number (77141119185).

Almost surely, 2^320432341221 is an apocalyptic number.

It is an amenable number.

320432341221 is a deficient number, since it is larger than the sum of its proper divisors (142414373889).

320432341221 is a wasteful number, since it uses less digits than its factorization.

320432341221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35603593475 (or 35603593472 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 320432341221 its reverse (122143234023), we get a palindrome (442575575244).

The spelling of 320432341221 in words is "three hundred twenty billion, four hundred thirty-two million, three hundred forty-one thousand, two hundred twenty-one".