12211210212112 has 20 divisors (see below), whose sum is σ = 23685304951696. Its totient is φ = 6098873450400.

The previous prime is 12211210212053. The next prime is 12211210212127. The reversal of 12211210212112 is 21121201211221.

It is a happy number.

It is a super-2 number, since 2×12211210212112² (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 12211210212112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420713514 + ... + 420742537.

Almost surely, 2^{12211210212112} is an apocalyptic number.

It is an amenable number.

12211210212112 is a deficient number, since it is larger than the sum of its proper divisors (11474094739584).

12211210212112 is an equidigital number, since it uses as much as digits as its factorization.

12211210212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841456966 (or 841456960 counting only the distinct ones).

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

Adding to 12211210212112 its reverse (21121201211221), we get a palindrome (33332411423333).

The spelling of 12211210212112 in words is "twelve trillion, two hundred eleven billion, two hundred ten million, two hundred twelve thousand, one hundred twelve".