321220014332144 has 10 divisors (see below), whose sum is σ = 622363777768560. Its totient is φ = 160610007166064.

The previous prime is 321220014332099. The next prime is 321220014332159. The reversal of 321220014332144 is 441233410022123.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 321220014332144.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10038125447864 + ... + 10038125447895.

It is an arithmetic number, because the mean of its divisors is an integer number (62236377776856).

Almost surely, 2^{321220014332144} is an apocalyptic number.

It is an amenable number.

321220014332144 is a deficient number, since it is larger than the sum of its proper divisors (301143763436416).

321220014332144 is a wasteful number, since it uses less digits than its factorization.

321220014332144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20076250895767 (or 20076250895761 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 321220014332144 its reverse (441233410022123), we get a palindrome (762453424354267).

The spelling of 321220014332144 in words is "three hundred twenty-one trillion, two hundred twenty billion, fourteen million, three hundred thirty-two thousand, one hundred forty-four".