1222121012212 has 12 divisors (see below), whose sum is σ = 2173772620516. Its totient is φ = 601043120640.

The previous prime is 1222121012197. The next prime is 1222121012269. The reversal of 1222121012212 is 2122101212221.

It can be written as a sum of positive squares in 2 ways, for example, as 634883865616 + 587237146596 = 796796^2 + 766314^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222121012212.

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, 2504346093 + ... + 2504346580.

Almost surely, 2^{1222121012212} is an apocalyptic number.

It is an amenable number.

1222121012212 is a deficient number, since it is larger than the sum of its proper divisors (951651608304).

1222121012212 is a wasteful number, since it uses less digits than its factorization.

1222121012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008692738 (or 5008692736 counting only the distinct ones).

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

Adding to 1222121012212 its reverse (2122101212221), we get a palindrome (3344222224433).

The spelling of 1222121012212 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, twelve thousand, two hundred twelve".