1222111212112 has 40 divisors (see below), whose sum is σ = 2706231651200. Its totient is φ = 523737124992.

The previous prime is 1222111212103. The next prime is 1222111212131. The reversal of 1222111212112 is 2112121112221.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1222111212112.

It is a congruent number.

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, 2220814 + ... + 2715922.

It is an arithmetic number, because the mean of its divisors is an integer number (67655791280).

Almost surely, 2^{1222111212112} is an apocalyptic number.

It is an amenable number.

1222111212112 is an abundant number, since it is smaller than the sum of its proper divisors (1484120439088).

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

1222111212112 is a wasteful number, since it uses less digits than its factorization.

1222111212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517163 (or 517157 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 1222111212112 its reverse (2112121112221), we get a palindrome (3334232324333).

The spelling of 1222111212112 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twelve thousand, one hundred twelve".