22440420321 has 32 divisors (see below), whose sum is σ = 33518665728. Its totient is φ = 13238447040.

The previous prime is 22440420209. The next prime is 22440420329. The reversal of 22440420321 is 12302404422.

It is not a de Polignac number, because 22440420321 - 2¹³ = 22440412129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22440420291 and 22440420300.

It is not an unprimeable number, because it can be changed into a prime (22440420329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171610 + ... + 272636.

It is an arithmetic number, because the mean of its divisors is an integer number (1047458304).

Almost surely, 2^22440420321 is an apocalyptic number.

It is an amenable number.

22440420321 is a deficient number, since it is larger than the sum of its proper divisors (11078245407).

22440420321 is a wasteful number, since it uses less digits than its factorization.

22440420321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101221.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22440420321 its reverse (12302404422), we get a palindrome (34742824743).

The spelling of 22440420321 in words is "twenty-two billion, four hundred forty million, four hundred twenty thousand, three hundred twenty-one".