4021221034244 has 12 divisors (see below), whose sum is σ = 7156410315600. Its totient is φ = 1976532372648.

The previous prime is 4021221034217. The next prime is 4021221034249. The reversal of 4021221034244 is 4424301221204.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4021221034249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8519535854 + ... + 8519536325.

It is an arithmetic number, because the mean of its divisors is an integer number (596367526300).

Almost surely, 2^{4021221034244} is an apocalyptic number.

It is an amenable number.

4021221034244 is a deficient number, since it is larger than the sum of its proper divisors (3135189281356).

4021221034244 is a wasteful number, since it uses less digits than its factorization.

4021221034244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17039072242 (or 17039072240 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 4021221034244 its reverse (4424301221204), we get a palindrome (8445522255448).

The spelling of 4021221034244 in words is "four trillion, twenty-one billion, two hundred twenty-one million, thirty-four thousand, two hundred forty-four".