4221540044 has 24 divisors (see below), whose sum is σ = 7419081600. Its totient is φ = 2101823360.

The previous prime is 4221540019. The next prime is 4221540067. The reversal of 4221540044 is 4400451224.

It is a junction number, because it is equal to n+sod(n) for n = 4221539995 and 4221540022.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996122 + ... + 1000350.

It is an arithmetic number, because the mean of its divisors is an integer number (309128400).

Almost surely, 2^4221540044 is an apocalyptic number.

It is an amenable number.

4221540044 is a deficient number, since it is larger than the sum of its proper divisors (3197541556).

4221540044 is a wasteful number, since it uses less digits than its factorization.

4221540044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5233 (or 5231 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 4221540044 is about 64973.3795026856. The cubic root of 4221540044 is about 1616.1821445142.

Adding to 4221540044 its reverse (4400451224), we get a palindrome (8621991268).

The spelling of 4221540044 in words is "four billion, two hundred twenty-one million, five hundred forty thousand, forty-four".