12211021222212 has 24 divisors (see below), whose sum is σ = 28495293184512. Its totient is φ = 4069924645600.

The previous prime is 12211021222157. The next prime is 12211021222241. The reversal of 12211021222212 is 21222212011221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51847839 + ... + 52082822.

It is an arithmetic number, because the mean of its divisors is an integer number (1187303882688).

Almost surely, 2^{12211021222212} is an apocalyptic number.

12211021222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12211021222212 is an abundant number, since it is smaller than the sum of its proper divisors (16284271962300).

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

12211021222212 is a wasteful number, since it uses less digits than its factorization.

12211021222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103940459 (or 103940457 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12211021222212 its reverse (21222212011221), we get a palindrome (33433233233433).

The spelling of 12211021222212 in words is "twelve trillion, two hundred eleven billion, twenty-one million, two hundred twenty-two thousand, two hundred twelve".