12213223221112 has 8 divisors (see below), whose sum is σ = 22899793539600. Its totient is φ = 6106611610552.

The previous prime is 12213223221091. The next prime is 12213223221119. The reversal of 12213223221112 is 21112232231221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213223221119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 763326451312 + ... + 763326451327.

It is an arithmetic number, because the mean of its divisors is an integer number (2862474192450).

Almost surely, 2^{12213223221112} is an apocalyptic number.

It is an amenable number.

12213223221112 is a deficient number, since it is larger than the sum of its proper divisors (10686570318488).

12213223221112 is a wasteful number, since it uses less digits than its factorization.

12213223221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526652902645 (or 1526652902641 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

Adding to 12213223221112 its reverse (21112232231221), we get a palindrome (33325455452333).

The spelling of 12213223221112 in words is "twelve trillion, two hundred thirteen billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred twelve".