1222001121212 has 12 divisors (see below), whose sum is σ = 2138514442680. Its totient is φ = 610996994736.

The previous prime is 1222001121197. The next prime is 1222001121223. The reversal of 1222001121212 is 2121211002221.

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, 27338 + ... + 1563569.

It is an arithmetic number, because the mean of its divisors is an integer number (178209536890).

Almost surely, 2^{1222001121212} is an apocalyptic number.

It is an amenable number.

1222001121212 is a deficient number, since it is larger than the sum of its proper divisors (916513321468).

1222001121212 is a wasteful number, since it uses less digits than its factorization.

1222001121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782940 (or 1782938 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222001121212 its reverse (2121211002221), we get a palindrome (3343212123433).

The spelling of 1222001121212 in words is "one trillion, two hundred twenty-two billion, one million, one hundred twenty-one thousand, two hundred twelve".