1022121122212 has 12 divisors (see below), whose sum is σ = 1788738231280. Its totient is φ = 511053056136.

The previous prime is 1022121122207. The next prime is 1022121122213. The reversal of 1022121122212 is 2122211212201.

It is a self number, because there is not a number n which added to its sum of digits gives 1022121122212.

It is not an unprimeable number, because it can be changed into a prime (1022121122213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1564038 + ... + 2119069.

Almost surely, 2^{1022121122212} is an apocalyptic number.

It is an amenable number.

1022121122212 is a deficient number, since it is larger than the sum of its proper divisors (766617109068).

1022121122212 is a wasteful number, since it uses less digits than its factorization.

1022121122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752490 (or 3752488 counting only the distinct ones).

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

Adding to 1022121122212 its reverse (2122211212201), we get a palindrome (3144332334413).

The spelling of 1022121122212 in words is "one trillion, twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".