12221201001212 has 24 divisors (see below), whose sum is σ = 24558242782080. Its totient is φ = 5212834547760.

The previous prime is 12221201001167. The next prime is 12221201001259. The reversal of 12221201001212 is 21210010212221.

It is a super-3 number, since 3×12221201001212³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034286662 + ... + 1034298477.

It is an arithmetic number, because the mean of its divisors is an integer number (1023260115920).

Almost surely, 2^{12221201001212} is an apocalyptic number.

It is an amenable number.

12221201001212 is an abundant number, since it is smaller than the sum of its proper divisors (12337041780868).

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

12221201001212 is a wasteful number, since it uses less digits than its factorization.

12221201001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068585361 (or 2068585359 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221201001212 its reverse (21210010212221), we get a palindrome (33431211213433).

The spelling of 12221201001212 in words is "twelve trillion, two hundred twenty-one billion, two hundred one million, one thousand, two hundred twelve".