12213111224 has 8 divisors (see below), whose sum is σ = 22899583560. Its totient is φ = 6106555608.

The previous prime is 12213111203. The next prime is 12213111263. The reversal of 12213111224 is 42211131221.

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

It is a junction number, because it is equal to n+sod(n) for n = 12213111196 and 12213111205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 763319444 + ... + 763319459.

It is an arithmetic number, because the mean of its divisors is an integer number (2862447945).

Almost surely, 2^12213111224 is an apocalyptic number.

It is an amenable number.

12213111224 is a deficient number, since it is larger than the sum of its proper divisors (10686472336).

12213111224 is a wasteful number, since it uses less digits than its factorization.

12213111224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526638909 (or 1526638905 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 12213111224 its reverse (42211131221), we get a palindrome (54424242445).

The spelling of 12213111224 in words is "twelve billion, two hundred thirteen million, one hundred eleven thousand, two hundred twenty-four".