222242343440 has 40 divisors (see below), whose sum is σ = 556460639448. Its totient is φ = 82058711040.

The previous prime is 222242343419. The next prime is 222242343457. The reversal of 222242343440 is 44343242222.

It can be written as a sum of positive squares in 4 ways, for example, as 1030153216 + 221212190224 = 32096^2 + 470332^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×222242343440² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222242343397 and 222242343406.

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, 106846241 + ... + 106848320.

Almost surely, 2^222242343440 is an apocalyptic number.

222242343440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222242343440 is an abundant number, since it is smaller than the sum of its proper divisors (334218296008).

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

222242343440 is a wasteful number, since it uses less digits than its factorization.

222242343440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213694587 (or 213694581 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 222242343440 its reverse (44343242222), we get a palindrome (266585585662).

The spelling of 222242343440 in words is "two hundred twenty-two billion, two hundred forty-two million, three hundred forty-three thousand, four hundred forty".