12211210122112 has 16 divisors (see below), whose sum is σ = 24327020165400. Its totient is φ = 6105605060992.

The previous prime is 12211210122101. The next prime is 12211210122113. The reversal of 12211210122112 is 21122101211221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×12211210122112² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211210122112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211210122113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47700039412 + ... + 47700039667.

Almost surely, 2^{12211210122112} is an apocalyptic number.

It is an amenable number.

12211210122112 is a deficient number, since it is larger than the sum of its proper divisors (12115810043288).

12211210122112 is an frugal number, since it uses more digits than its factorization.

12211210122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95400079093 (or 95400079081 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12211210122112 its reverse (21122101211221), we get a palindrome (33333311333333).

The spelling of 12211210122112 in words is "twelve trillion, two hundred eleven billion, two hundred ten million, one hundred twenty-two thousand, one hundred twelve".