1222021211212 has 24 divisors (see below), whose sum is σ = 2162857389056. Its totient is φ = 604081505808.

The previous prime is 1222021211171. The next prime is 1222021211287. The reversal of 1222021211212 is 2121121202221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222021211212.

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, 2193138 + ... + 2693305.

Almost surely, 2^{1222021211212} is an apocalyptic number.

It is an amenable number.

1222021211212 is a deficient number, since it is larger than the sum of its proper divisors (940836177844).

1222021211212 is a wasteful number, since it uses less digits than its factorization.

1222021211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4887157 (or 4887155 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222021211212 its reverse (2121121202221), we get a palindrome (3343142413433).

The spelling of 1222021211212 in words is "one trillion, two hundred twenty-two billion, twenty-one million, two hundred eleven thousand, two hundred twelve".