222241223440 has 20 divisors (see below), whose sum is σ = 516710844684. Its totient is φ = 88896489344.

The previous prime is 222241223437. The next prime is 222241223489. The reversal of 222241223440 is 44322142222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 73899160336 + 148342063104 = 271844^2 + 385152^2 .

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

It is a super-2 number, since 2×222241223440² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222241223399 and 222241223408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389007567 + ... + 1389007726.

Almost surely, 2^222241223440 is an apocalyptic number.

222241223440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222241223440 is an abundant number, since it is smaller than the sum of its proper divisors (294469621244).

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

222241223440 is a wasteful number, since it uses less digits than its factorization.

222241223440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778015306 (or 2778015300 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 222241223440 its reverse (44322142222), we get a palindrome (266563365662).

The spelling of 222241223440 in words is "two hundred twenty-two billion, two hundred forty-one million, two hundred twenty-three thousand, four hundred forty".