4422220043221 has 4 divisors (see below), whose sum is σ = 4422249045792. Its totient is φ = 4422191040652.

The previous prime is 4422220043093. The next prime is 4422220043233. The reversal of 4422220043221 is 1223400222244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4422220043221 - 2⁷ = 4422220043093 is a prime.

It is a super-2 number, since 2×4422220043221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4422220043221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4422220043321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14271355 + ... + 14577928.

It is an arithmetic number, because the mean of its divisors is an integer number (1105562261448).

Almost surely, 2^{4422220043221} is an apocalyptic number.

It is an amenable number.

4422220043221 is a deficient number, since it is larger than the sum of its proper divisors (29002571).

4422220043221 is a wasteful number, since it uses less digits than its factorization.

4422220043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29002570.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 4422220043221 its reverse (1223400222244), we get a palindrome (5645620265465).

The spelling of 4422220043221 in words is "four trillion, four hundred twenty-two billion, two hundred twenty million, forty-three thousand, two hundred twenty-one".