1212211022212 has 48 divisors (see below), whose sum is σ = 2140840977408. Its totient is φ = 600568279200.

The previous prime is 1212211022203. The next prime is 1212211022221. The reversal of 1212211022212 is 2122201122121.

It is an interprime number because it is at equal distance from previous prime (1212211022203) and next prime (1212211022221).

It is a self number, because there is not a number n which added to its sum of digits gives 1212211022212.

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 15 ways as a sum of consecutive naturals, for example, 425186587 + ... + 425189437.

It is an arithmetic number, because the mean of its divisors is an integer number (44600853696).

Almost surely, 2^{1212211022212} is an apocalyptic number.

It is an amenable number.

1212211022212 is a deficient number, since it is larger than the sum of its proper divisors (928629955196).

1212211022212 is a wasteful number, since it uses less digits than its factorization.

1212211022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816 (or 4814 counting only the distinct ones).

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

Adding to 1212211022212 its reverse (2122201122121), we get a palindrome (3334412144333).

Subtracting 1212211022212 from its reverse (2122201122121), we obtain a palindrome (909990099909).

The spelling of 1212211022212 in words is "one trillion, two hundred twelve billion, two hundred eleven million, twenty-two thousand, two hundred twelve".