12220212221212 has 48 divisors (see below), whose sum is σ = 21604172325120. Its totient is φ = 6047946580608.

The previous prime is 12220212221207. The next prime is 12220212221219. The reversal of 12220212221212 is 21212221202221.

12220212221212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220212221219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161108448 + ... + 161184280.

It is an arithmetic number, because the mean of its divisors is an integer number (450086923440).

Almost surely, 2^{12220212221212} is an apocalyptic number.

It is an amenable number.

12220212221212 is a deficient number, since it is larger than the sum of its proper divisors (9383960103908).

12220212221212 is a wasteful number, since it uses less digits than its factorization.

12220212221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77002 (or 77000 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12220212221212 its reverse (21212221202221), we get a palindrome (33432433423433).

The spelling of 12220212221212 in words is "twelve trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twelve".