12120231222 has 48 divisors (see below), whose sum is σ = 29051343360. Its totient is φ = 3621063600.

The previous prime is 12120231139. The next prime is 12120231239. The reversal of 12120231222 is 22213202121.

12120231222 is a `hidden beast` number, since 1 + 212 + 0 + 231 + 222 = 666.

It is a super-2 number, since 2×12120231222² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12120231195 and 12120231204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 417022 + ... + 445137.

It is an arithmetic number, because the mean of its divisors is an integer number (605236320).

Almost surely, 2^12120231222 is an apocalyptic number.

12120231222 is an abundant number, since it is smaller than the sum of its proper divisors (16931112138).

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

12120231222 is a wasteful number, since it uses less digits than its factorization.

12120231222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862249 (or 862246 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12120231222 its reverse (22213202121), we get a palindrome (34333433343).

It can be divided in two parts, 12120 and 231222, that added together give a palindrome (243342).

The spelling of 12120231222 in words is "twelve billion, one hundred twenty million, two hundred thirty-one thousand, two hundred twenty-two".