321220001131443 has 24 divisors (see below), whose sum is σ = 466334482172000. Its totient is φ = 213062120561664.

The previous prime is 321220001131387. The next prime is 321220001131453. The reversal of 321220001131443 is 344131100022123.

321220001131443 is a `hidden beast` number, since 3 + 2 + 1 + 2 + 200 + 0 + 1 + 13 + 1 + 443 = 666.

It is not a de Polignac number, because 321220001131443 - 2¹³ = 321220001123251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321220001131453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41877843 + ... + 48950931.

Almost surely, 2^{321220001131443} is an apocalyptic number.

321220001131443 is a deficient number, since it is larger than the sum of its proper divisors (145114481040557).

321220001131443 is a wasteful number, since it uses less digits than its factorization.

321220001131443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098651 (or 7098648 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 321220001131443 its reverse (344131100022123), we get a palindrome (665351101153566).

The spelling of 321220001131443 in words is "three hundred twenty-one trillion, two hundred twenty billion, one million, one hundred thirty-one thousand, four hundred forty-three".