221440310020304 has 80 divisors (see below), whose sum is σ = 443099069584080. Its totient is φ = 107125689507840.

The previous prime is 221440310020283. The next prime is 221440310020343. The reversal of 221440310020304 is 403020013044122.

It can be written as a sum of positive squares in 8 ways, for example, as 6825427952704 + 214614882067600 = 2612552^2 + 14649740^2 .

It is a congruent number.

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, 1942930232 + ... + 1943044200.

It is an arithmetic number, because the mean of its divisors is an integer number (5538738369801).

Almost surely, 2^{221440310020304} is an apocalyptic number.

It is an amenable number.

221440310020304 is an abundant number, since it is smaller than the sum of its proper divisors (221658759563776).

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

221440310020304 is a wasteful number, since it uses less digits than its factorization.

221440310020304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132328 (or 132322 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 221440310020304 its reverse (403020013044122), we get a palindrome (624460323064426).

The spelling of 221440310020304 in words is "two hundred twenty-one trillion, four hundred forty billion, three hundred ten million, twenty thousand, three hundred four".