1000222211212 has 18 divisors (see below), whose sum is σ = 2036166644652. Its totient is φ = 428666661864.

The previous prime is 1000222211159. The next prime is 1000222211239. The reversal of 1000222211212 is 2121122220001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2551587078 + ... + 2551587469.

Almost surely, 2^{1000222211212} is an apocalyptic number.

It is an amenable number.

1000222211212 is an abundant number, since it is smaller than the sum of its proper divisors (1035944433440).

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

1000222211212 is a wasteful number, since it uses less digits than its factorization.

1000222211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5103174565 (or 5103174556 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1000222211212 its reverse (2121122220001), we get a palindrome (3121344431213).

The spelling of 1000222211212 in words is "one trillion, two hundred twenty-two million, two hundred eleven thousand, two hundred twelve".