1222223212 has 24 divisors (see below), whose sum is σ = 2528739360. Its totient is φ = 505747200.

The previous prime is 1222223209. The next prime is 1222223221. The reversal of 1222223212 is 2123222221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222223212.

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, 751789 + ... + 753412.

It is an arithmetic number, because the mean of its divisors is an integer number (105364140).

Almost surely, 2^1222223212 is an apocalyptic number.

It is an amenable number.

1222223212 is an abundant number, since it is smaller than the sum of its proper divisors (1306516148).

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

1222223212 is a wasteful number, since it uses less digits than its factorization.

1222223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505241 (or 1505239 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 1222223212 is about 34960.3090947434. The cubic root of 1222223212 is about 1069.1783986118.

Adding to 1222223212 its reverse (2123222221), we get a palindrome (3345445433).

Subtracting 1222223212 from its reverse (2123222221), we obtain a palindrome (900999009).

The spelling of 1222223212 in words is "one billion, two hundred twenty-two million, two hundred twenty-three thousand, two hundred twelve".