12212022212 has 24 divisors (see below), whose sum is σ = 23042808600. Its totient is φ = 5629499136.

The previous prime is 12212022203. The next prime is 12212022257. The reversal of 12212022212 is 21222021221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27394756 + 12184627456 = 5234^2 + 110384^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98537 + ... + 184752.

It is an arithmetic number, because the mean of its divisors is an integer number (960117025).

Almost surely, 2^12212022212 is an apocalyptic number.

It is an amenable number.

12212022212 is a deficient number, since it is larger than the sum of its proper divisors (10830786388).

12212022212 is a wasteful number, since it uses less digits than its factorization.

12212022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284135 (or 284133 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12212022212 its reverse (21222021221), we get a palindrome (33434043433).

Subtracting 12212022212 from its reverse (21222021221), we obtain a palindrome (9009999009).

The spelling of 12212022212 in words is "twelve billion, two hundred twelve million, twenty-two thousand, two hundred twelve".