1212221103224 has 32 divisors (see below), whose sum is σ = 2401056118800. Its totient is φ = 572166524160.

The previous prime is 1212221103193. The next prime is 1212221103251. The reversal of 1212221103224 is 4223011222121.

It is a super-2 number, since 2×1212221103224² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212221103224.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14147927 + ... + 14233350.

Almost surely, 2^{1212221103224} is an apocalyptic number.

It is an amenable number.

1212221103224 is a deficient number, since it is larger than the sum of its proper divisors (1188835015576).

1212221103224 is a wasteful number, since it uses less digits than its factorization.

1212221103224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28381583 (or 28381579 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1212221103224 its reverse (4223011222121), we get a palindrome (5435232325345).

The spelling of 1212221103224 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, one hundred three thousand, two hundred twenty-four".