12212021022212 has 36 divisors (see below), whose sum is σ = 23499540058428. Its totient is φ = 5548777344000.

The previous prime is 12212021022163. The next prime is 12212021022337. The reversal of 12212021022212 is 21222012021221.

It can be written as a sum of positive squares in 2 ways, for example, as 6183149720836 + 6028871301376 = 2486594^2 + 2455376^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3610289 + ... + 6120312.

It is an arithmetic number, because the mean of its divisors is an integer number (652765001623).

Almost surely, 2^{12212021022212} is an apocalyptic number.

It is an amenable number.

12212021022212 is a deficient number, since it is larger than the sum of its proper divisors (11287519036216).

12212021022212 is a wasteful number, since it uses less digits than its factorization.

12212021022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9733220 (or 9733207 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12212021022212 its reverse (21222012021221), we get a palindrome (33434033043433).

Subtracting 12212021022212 from its reverse (21222012021221), we obtain a palindrome (9009990999009).

The spelling of 12212021022212 in words is "twelve trillion, two hundred twelve billion, twenty-one million, twenty-two thousand, two hundred twelve".