4430222021221 has 4 divisors (see below), whose sum is σ = 4430238787744. Its totient is φ = 4430205254700.

The previous prime is 4430222021101. The next prime is 4430222021231. The reversal of 4430222021221 is 1221202220344.

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 4430222021221 - 2¹¹ = 4430222019173 is a prime.

It is a super-2 number, since 2×4430222021221² (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 (4430222021231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7980465 + ... + 8517526.

It is an arithmetic number, because the mean of its divisors is an integer number (1107559696936).

Almost surely, 2^{4430222021221} is an apocalyptic number.

It is an amenable number.

4430222021221 is a deficient number, since it is larger than the sum of its proper divisors (16766523).

4430222021221 is a wasteful number, since it uses less digits than its factorization.

4430222021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16766522.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 4430222021221 its reverse (1221202220344), we get a palindrome (5651424241565).

The spelling of 4430222021221 in words is "four trillion, four hundred thirty billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-one".