12220211312212 has 12 divisors (see below), whose sum is σ = 21385398646080. Its totient is φ = 6110097413336.

The previous prime is 12220211312149. The next prime is 12220211312213. The reversal of 12220211312212 is 21221311202221.

It is a super-2 number, since 2×12220211312212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220211312213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300613 + ... + 5452819.

It is an arithmetic number, because the mean of its divisors is an integer number (1782116553840).

Almost surely, 2^{12220211312212} is an apocalyptic number.

It is an amenable number.

12220211312212 is a deficient number, since it is larger than the sum of its proper divisors (9165187333868).

12220211312212 is a wasteful number, since it uses less digits than its factorization.

12220211312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121390 (or 4121388 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12220211312212 its reverse (21221311202221), we get a palindrome (33441522514433).

The spelling of 12220211312212 in words is "twelve trillion, two hundred twenty billion, two hundred eleven million, three hundred twelve thousand, two hundred twelve".