1222121122012 has 36 divisors (see below), whose sum is σ = 2528674524264. Its totient is φ = 515179859040.

The previous prime is 1222121122007. The next prime is 1222121122037. The reversal of 1222121122012 is 2102211212221.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 51097158 + ... + 51121069.

Almost surely, 2^{1222121122012} is an apocalyptic number.

It is an amenable number.

1222121122012 is an abundant number, since it is smaller than the sum of its proper divisors (1306553402252).

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

1222121122012 is a wasteful number, since it uses less digits than its factorization.

1222121122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102218306 (or 102218297 counting only the distinct ones).

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

Adding to 1222121122012 its reverse (2102211212221), we get a palindrome (3324332334233).

The spelling of 1222121122012 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, twelve".