4220444414021 has 6 divisors (see below), whose sum is σ = 4639000884966. Its totient is φ = 3836767649000.

The previous prime is 4220444413981. The next prime is 4220444414051. The reversal of 4220444414021 is 1204144440224.

It can be written as a sum of positive squares in only one way, i.e., 3654768945025 + 565675468996 = 1911745^2 + 752114^2 .

It is not a de Polignac number, because 4220444414021 - 2¹⁸ = 4220444151877 is a prime.

It is a super-2 number, since 2×4220444414021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220444414051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17439852830 + ... + 17439853071.

It is an arithmetic number, because the mean of its divisors is an integer number (773166814161).

Almost surely, 2^{4220444414021} is an apocalyptic number.

It is an amenable number.

4220444414021 is a deficient number, since it is larger than the sum of its proper divisors (418556470945).

4220444414021 is a wasteful number, since it uses less digits than its factorization.

4220444414021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34879705923 (or 34879705912 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 4220444414021 its reverse (1204144440224), we get a palindrome (5424588854245).

The spelling of 4220444414021 in words is "four trillion, two hundred twenty billion, four hundred forty-four million, four hundred fourteen thousand, twenty-one".