22240420424 has 8 divisors (see below), whose sum is σ = 41700788310. Its totient is φ = 11120210208.

The previous prime is 22240420399. The next prime is 22240420451. The reversal of 22240420424 is 42402404222.

It can be written as a sum of positive squares in only one way, i.e., 18243904900 + 3996515524 = 135070^2 + 63218^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 22240420393 and 22240420402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390026269 + ... + 1390026284.

Almost surely, 2^22240420424 is an apocalyptic number.

It is an amenable number.

22240420424 is a deficient number, since it is larger than the sum of its proper divisors (19460367886).

22240420424 is a wasteful number, since it uses less digits than its factorization.

22240420424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780052559 (or 2780052555 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 22240420424 its reverse (42402404222), we get a palindrome (64642824646).

The spelling of 22240420424 in words is "twenty-two billion, two hundred forty million, four hundred twenty thousand, four hundred twenty-four".