1121221322212 has 12 divisors (see below), whose sum is σ = 1963093069756. Its totient is φ = 560337588000.

The previous prime is 1121221322189. The next prime is 1121221322237. The reversal of 1121221322212 is 2122231221211.

It can be written as a sum of positive squares in 2 ways, for example, as 489854410816 + 631366911396 = 699896^2 + 794586^2 .

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, 68259039 + ... + 68275462.

Almost surely, 2^{1121221322212} is an apocalyptic number.

It is an amenable number.

1121221322212 is a deficient number, since it is larger than the sum of its proper divisors (841871747544).

1121221322212 is a wasteful number, since it uses less digits than its factorization.

1121221322212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136536558 (or 136536556 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

Adding to 1121221322212 its reverse (2122231221211), we get a palindrome (3243452543423).

The spelling of 1121221322212 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, three hundred twenty-two thousand, two hundred twelve".