22434220321 has 4 divisors (see below), whose sum is σ = 22597973892. Its totient is φ = 22270466752.

The previous prime is 22434220273. The next prime is 22434220343. The reversal of 22434220321 is 12302243422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4280430625 + 18153789696 = 65425^2 + 134736^2 .

It is a cyclic number.

It is not a de Polignac number, because 22434220321 - 2²³ = 22425831713 is a prime.

It is a super-2 number, since 2×22434220321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22435220321) 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, 81876580 + ... + 81876853.

It is an arithmetic number, because the mean of its divisors is an integer number (5649493473).

Almost surely, 2^22434220321 is an apocalyptic number.

It is an amenable number.

22434220321 is a deficient number, since it is larger than the sum of its proper divisors (163753571).

22434220321 is a wasteful number, since it uses less digits than its factorization.

22434220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163753570.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 22434220321 its reverse (12302243422), we get a palindrome (34736463743).

The spelling of 22434220321 in words is "twenty-two billion, four hundred thirty-four million, two hundred twenty thousand, three hundred twenty-one".