222442204240 has 20 divisors (see below), whose sum is σ = 517178125044. Its totient is φ = 88976881664.

The previous prime is 222442204223. The next prime is 222442204241. The reversal of 222442204240 is 42402244222.

It can be written as a sum of positive squares in 2 ways, for example, as 92652054544 + 129790149696 = 304388^2 + 360264^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 222442204199 and 222442204208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222442204241) 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, 1390263697 + ... + 1390263856.

Almost surely, 2^222442204240 is an apocalyptic number.

222442204240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222442204240 is an abundant number, since it is smaller than the sum of its proper divisors (294735920804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222442204240 is a wasteful number, since it uses less digits than its factorization.

222442204240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780527566 (or 2780527560 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 222442204240 its reverse (42402244222), we get a palindrome (264844448462).

The spelling of 222442204240 in words is "two hundred twenty-two billion, four hundred forty-two million, two hundred four thousand, two hundred forty".