12021111111222 has 24 divisors (see below), whose sum is σ = 26055215472000. Its totient is φ = 4005579386160.

The previous prime is 12021111111091. The next prime is 12021111111239. The reversal of 12021111111222 is 22211111112021.

It is a happy number.

12021111111222 is a `hidden beast` number, since 120 + 211 + 1 + 1 + 111 + 222 = 666.

It is a super-2 number, since 2×12021111111222² (a number of 27 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 = 12021111111195 and 12021111111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121420054 + ... + 121519017.

It is an arithmetic number, because the mean of its divisors is an integer number (1085633978000).

Almost surely, 2^{12021111111222} is an apocalyptic number.

12021111111222 is an abundant number, since it is smaller than the sum of its proper divisors (14034104360778).

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

12021111111222 is a wasteful number, since it uses less digits than its factorization.

12021111111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242941828 (or 242941825 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12021111111222 its reverse (22211111112021), we get a palindrome (34232222223243).

The spelling of 12021111111222 in words is "twelve trillion, twenty-one billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty-two".