12212131222 has 8 divisors (see below), whose sum is σ = 18328833576. Its totient is φ = 6102520032.

The previous prime is 12212131207. The next prime is 12212131241. The reversal of 12212131222 is 22213121221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12212131222² (a number of 21 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 12212131222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768483 + ... + 1775374.

It is an arithmetic number, because the mean of its divisors is an integer number (2291104197).

Almost surely, 2^12212131222 is an apocalyptic number.

12212131222 is a deficient number, since it is larger than the sum of its proper divisors (6116702354).

12212131222 is a wasteful number, since it uses less digits than its factorization.

12212131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545582.

The product of its digits is 192, while the sum is 19.

Adding to 12212131222 its reverse (22213121221), we get a palindrome (34425252443).

It can be divided in two parts, 1221 and 2131222, that multiplied together give a palindrome (2602222062).

The spelling of 12212131222 in words is "twelve billion, two hundred twelve million, one hundred thirty-one thousand, two hundred twenty-two".