1222121212 has 12 divisors (see below), whose sum is σ = 2303228536. Its totient is φ = 564055920.

The previous prime is 1222121207. The next prime is 1222121233. The reversal of 1222121212 is 2121212221.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 11751114 + ... + 11751217.

Almost surely, 2^1222121212 is an apocalyptic number.

It is an amenable number.

1222121212 is a deficient number, since it is larger than the sum of its proper divisors (1081107324).

1222121212 is a wasteful number, since it uses less digits than its factorization.

1222121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23502348 (or 23502346 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 1222121212 is about 34958.8502671355. The cubic root of 1222121212 is about 1069.1486552094.

Adding to 1222121212 its reverse (2121212221), we get a palindrome (3343333433).

It can be divided in two parts, 12221 and 21212, that added together give a palindrome (33433).

The spelling of 1222121212 in words is "one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".