221440443004 has 48 divisors (see below), whose sum is σ = 467079250176. Its totient is φ = 90615008000.

The previous prime is 221440442963. The next prime is 221440443019. The reversal of 221440443004 is 400344044122.

It is a super-3 number, since 3×221440443004³ (a number of 35 digits) contains 333 as substring.

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, 6418522 + ... + 6452929.

It is an arithmetic number, because the mean of its divisors is an integer number (9730817712).

Almost surely, 2^221440443004 is an apocalyptic number.

It is an amenable number.

221440443004 is an abundant number, since it is smaller than the sum of its proper divisors (245638807172).

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

221440443004 is a wasteful number, since it uses less digits than its factorization.

221440443004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12871506 (or 12871504 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 221440443004 its reverse (400344044122), we get a palindrome (621784487126).

The spelling of 221440443004 in words is "two hundred twenty-one billion, four hundred forty million, four hundred forty-three thousand, four".