222444420424 has 32 divisors (see below), whose sum is σ = 431529363000. Its totient is φ = 107371059712.

The previous prime is 222444420409. The next prime is 222444420449. The reversal of 222444420424 is 424024444222.

It can be written as a sum of positive squares in 4 ways, for example, as 145632297924 + 76812122500 = 381618^2 + 277150^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222444420424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1581852 + ... + 1716724.

Almost surely, 2^222444420424 is an apocalyptic number.

It is an amenable number.

222444420424 is a deficient number, since it is larger than the sum of its proper divisors (209084942576).

222444420424 is a wasteful number, since it uses less digits than its factorization.

222444420424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142017 (or 142013 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 222444420424 its reverse (424024444222), we get a palindrome (646468864646).

The spelling of 222444420424 in words is "two hundred twenty-two billion, four hundred forty-four million, four hundred twenty thousand, four hundred twenty-four".