321220420032434 has 8 divisors (see below), whose sum is σ = 518894524667820. Its totient is φ = 148255578476496.

The previous prime is 321220420032433. The next prime is 321220420032439. The reversal of 321220420032434 is 434230024022123.

It can be written as a sum of positive squares in 2 ways, for example, as 320739265548025 + 481154484409 = 17909195^2 + 693653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×321220420032434² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321220420032434.

It is not an unprimeable number, because it can be changed into a prime (321220420032433) 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, 6177315769829 + ... + 6177315769880.

Almost surely, 2^{321220420032434} is an apocalyptic number.

321220420032434 is a deficient number, since it is larger than the sum of its proper divisors (197674104635386).

321220420032434 is a wasteful number, since it uses less digits than its factorization.

321220420032434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12354631539724.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 321220420032434 its reverse (434230024022123), we get a palindrome (755450444054557).

The spelling of 321220420032434 in words is "three hundred twenty-one trillion, two hundred twenty billion, four hundred twenty million, thirty-two thousand, four hundred thirty-four".