22234440421 has 8 divisors (see below), whose sum is σ = 22370403960. Its totient is φ = 22098562752.

The previous prime is 22234440311. The next prime is 22234440491. The reversal of 22234440421 is 12404443222.

It can be written as a sum of positive squares in 4 ways, for example, as 12292156900 + 9942283521 = 110870^2 + 99711^2 .

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 22234440421 - 2²¹ = 22232343269 is a prime.

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 22234440421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22234440491) 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 7 ways as a sum of consecutive naturals, for example, 543015 + ... + 582523.

It is an arithmetic number, because the mean of its divisors is an integer number (2796300495).

Almost surely, 2^22234440421 is an apocalyptic number.

It is an amenable number.

22234440421 is a deficient number, since it is larger than the sum of its proper divisors (135963539).

22234440421 is a wasteful number, since it uses less digits than its factorization.

22234440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42935.

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

Adding to 22234440421 its reverse (12404443222), we get a palindrome (34638883643).

The spelling of 22234440421 in words is "twenty-two billion, two hundred thirty-four million, four hundred forty thousand, four hundred twenty-one".