1222120212112 has 20 divisors (see below), whose sum is σ = 2367960653740. Its totient is φ = 611033591808.

The previous prime is 1222120212067. The next prime is 1222120212133. The reversal of 1222120212112 is 2112120212221.

It can be written as a sum of positive squares in 2 ways, for example, as 636491222416 + 585628989696 = 797804^2 + 765264^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222120212112.

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, 1274193 + ... + 2016880.

It is an arithmetic number, because the mean of its divisors is an integer number (118398032687).

Almost surely, 2^{1222120212112} is an apocalyptic number.

It is an amenable number.

1222120212112 is a deficient number, since it is larger than the sum of its proper divisors (1145840441628).

1222120212112 is a wasteful number, since it uses less digits than its factorization.

1222120212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314290 (or 3314284 counting only the distinct ones).

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

Adding to 1222120212112 its reverse (2112120212221), we get a palindrome (3334240424333).

The spelling of 1222120212112 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, two hundred twelve thousand, one hundred twelve".