321044421156 has 48 divisors (see below), whose sum is σ = 756034750464. Its totient is φ = 106026955776.

The previous prime is 321044421121. The next prime is 321044421161. The reversal of 321044421156 is 651124440123.

It is a happy number.

It is a super-2 number, since 2×321044421156² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973396 + ... + 1260788.

It is an arithmetic number, because the mean of its divisors is an integer number (15750723968).

Almost surely, 2^321044421156 is an apocalyptic number.

It is an amenable number.

321044421156 is an abundant number, since it is smaller than the sum of its proper divisors (434990329308).

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

321044421156 is a wasteful number, since it uses less digits than its factorization.

321044421156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288260 (or 288258 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 321044421156 its reverse (651124440123), we get a palindrome (972168861279).

The spelling of 321044421156 in words is "three hundred twenty-one billion, forty-four million, four hundred twenty-one thousand, one hundred fifty-six".