22220344420421 has 8 divisors (see below), whose sum is σ = 25425535576704. Its totient is φ = 19022867323920.

The previous prime is 22220344420283. The next prime is 22220344420453. The reversal of 22220344420421 is 12402444302222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22220344420421 - 2¹⁸ = 22220344158277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220344420121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928508770 + ... + 1928520291.

It is an arithmetic number, because the mean of its divisors is an integer number (3178191947088).

Almost surely, 2^{22220344420421} is an apocalyptic number.

It is an amenable number.

22220344420421 is a deficient number, since it is larger than the sum of its proper divisors (3205191156283).

22220344420421 is an equidigital number, since it uses as much as digits as its factorization.

22220344420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857029891.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 22220344420421 its reverse (12402444302222), we get a palindrome (34622788722643).

The spelling of 22220344420421 in words is "twenty-two trillion, two hundred twenty billion, three hundred forty-four million, four hundred twenty thousand, four hundred twenty-one".