1222222304440 has 16 divisors (see below), whose sum is σ = 2750000185080. Its totient is φ = 488888921760.

The previous prime is 1222222304411. The next prime is 1222222304447. The reversal of 1222222304440 is 444032222221.

It is a happy number.

It is a super-2 number, since 2×1222222304440² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222222304399 and 1222222304408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222222304447) 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, 15277778766 + ... + 15277778845.

Almost surely, 2^{1222222304440} is an apocalyptic number.

1222222304440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222222304440 is an abundant number, since it is smaller than the sum of its proper divisors (1527777880640).

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

1222222304440 is a wasteful number, since it uses less digits than its factorization.

1222222304440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30555557622 (or 30555557618 counting only the distinct ones).

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

Adding to 1222222304440 its reverse (444032222221), we get a palindrome (1666254526661).

The spelling of 1222222304440 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, three hundred four thousand, four hundred forty".