4021244220544 has 32 divisors (see below), whose sum is σ = 8018296443900. Its totient is φ = 2008809034752.

The previous prime is 4021244220533. The next prime is 4021244220599. The reversal of 4021244220544 is 4450224421204.

It can be written as a sum of positive squares in 2 ways, for example, as 3871103470144 + 150140750400 = 1967512^2 + 387480^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×4021244220544² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14022147 + ... + 14306050.

Almost surely, 2^{4021244220544} is an apocalyptic number.

It is an amenable number.

4021244220544 is a deficient number, since it is larger than the sum of its proper divisors (3997052223356).

4021244220544 is a wasteful number, since it uses less digits than its factorization.

4021244220544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28329320 (or 28329308 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 4021244220544 its reverse (4450224421204), we get a palindrome (8471468641748).

The spelling of 4021244220544 in words is "four trillion, twenty-one billion, two hundred forty-four million, two hundred twenty thousand, five hundred forty-four".