221443003444 has 48 divisors (see below), whose sum is σ = 432154915920. Its totient is φ = 98582077440.

The previous prime is 221443003403. The next prime is 221443003469. The reversal of 221443003444 is 444300344122.

It can be written as a sum of positive squares in 8 ways, for example, as 55313395344 + 166129608100 = 235188^2 + 407590^2 .

It is a super-2 number, since 2×221443003444² (a number of 23 digits) contains 22 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, 1455124 + ... + 1600084.

It is an arithmetic number, because the mean of its divisors is an integer number (9003227415).

Almost surely, 2^221443003444 is an apocalyptic number.

It is an amenable number.

221443003444 is a deficient number, since it is larger than the sum of its proper divisors (210711912476).

221443003444 is a wasteful number, since it uses less digits than its factorization.

221443003444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146020 (or 146018 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 221443003444 its reverse (444300344122), we get a palindrome (665743347566).

The spelling of 221443003444 in words is "two hundred twenty-one billion, four hundred forty-three million, three thousand, four hundred forty-four".