12022201221212 has 48 divisors (see below), whose sum is σ = 25901443276800. Its totient is φ = 4754663347392.

The previous prime is 12022201221179. The next prime is 12022201221223. The reversal of 12022201221212 is 21212210222021.

It is a super-2 number, since 2×12022201221212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3501212 + ... + 6025187.

It is an arithmetic number, because the mean of its divisors is an integer number (539613401600).

Almost surely, 2^{12022201221212} is an apocalyptic number.

It is an amenable number.

12022201221212 is an abundant number, since it is smaller than the sum of its proper divisors (13879242055588).

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

12022201221212 is a wasteful number, since it uses less digits than its factorization.

12022201221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9529890 (or 9529888 counting only the distinct ones).

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

Adding to 12022201221212 its reverse (21212210222021), we get a palindrome (33234411443233).

The spelling of 12022201221212 in words is "twelve trillion, twenty-two billion, two hundred one million, two hundred twenty-one thousand, two hundred twelve".