321224241210440 has 64 divisors (see below), whose sum is σ = 723382118424000. Its totient is φ = 128378159712000.

The previous prime is 321224241210427. The next prime is 321224241210451. The reversal of 321224241210440 is 44012142422123.

It is a junction number, because it is equal to n+sod(n) for n = 321224241210397 and 321224241210406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320538071 + ... + 321538649.

It is an arithmetic number, because the mean of its divisors is an integer number (11302845600375).

Almost surely, 2^{321224241210440} is an apocalyptic number.

It is an amenable number.

321224241210440 is an abundant number, since it is smaller than the sum of its proper divisors (402157877213560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321224241210440 is a wasteful number, since it uses less digits than its factorization.

321224241210440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007550 (or 1007546 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 321224241210440 its reverse (44012142422123), we get a palindrome (365236383632563).

The spelling of 321224241210440 in words is "three hundred twenty-one trillion, two hundred twenty-four billion, two hundred forty-one million, two hundred ten thousand, four hundred forty".