12221022111212 has 24 divisors (see below), whose sum is σ = 22318347206400. Its totient is φ = 5844391912656.

The previous prime is 12221022111203. The next prime is 12221022111313. The reversal of 12221022111212 is 21211122012221.

It is a super-3 number, since 3×12221022111212³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 3836762 + ... + 6258017.

It is an arithmetic number, because the mean of its divisors is an integer number (929931133600).

Almost surely, 2^{12221022111212} is an apocalyptic number.

It is an amenable number.

12221022111212 is a deficient number, since it is larger than the sum of its proper divisors (10097325095188).

12221022111212 is a wasteful number, since it uses less digits than its factorization.

12221022111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107965 (or 10107963 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12221022111212 its reverse (21211122012221), we get a palindrome (33432144123433).

The spelling of 12221022111212 in words is "twelve trillion, two hundred twenty-one billion, twenty-two million, one hundred eleven thousand, two hundred twelve".