12211103132312 has 32 divisors (see below), whose sum is σ = 26166762720000. Its totient is φ = 5233307283744.

The previous prime is 12211103132303. The next prime is 12211103132353. The reversal of 12211103132312 is 21323130111221.

It is a happy number.

It is a super-2 number, since 2×12211103132312² (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 7 ways as a sum of consecutive naturals, for example, 22495733 + ... + 23032155.

It is an arithmetic number, because the mean of its divisors is an integer number (817711335000).

Almost surely, 2^{12211103132312} is an apocalyptic number.

It is an amenable number.

12211103132312 is an abundant number, since it is smaller than the sum of its proper divisors (13955659587688).

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

12211103132312 is a wasteful number, since it uses less digits than its factorization.

12211103132312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942935 (or 942931 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12211103132312 its reverse (21323130111221), we get a palindrome (33534233243533).

The spelling of 12211103132312 in words is "twelve trillion, two hundred eleven billion, one hundred three million, one hundred thirty-two thousand, three hundred twelve".