12021111012222 has 32 divisors (see below), whose sum is σ = 28768470800160. Its totient is φ = 3698803388160.

The previous prime is 12021111012191. The next prime is 12021111012241. The reversal of 12021111012222 is 22221011112021.

12021111012222 is a `hidden beast` number, since 120 + 211 + 110 + 1 + 2 + 222 = 666.

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 = 12021111012195 and 12021111012204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8562044179 + ... + 8562045582.

It is an arithmetic number, because the mean of its divisors is an integer number (899014712505).

Almost surely, 2^{12021111012222} is an apocalyptic number.

12021111012222 is an abundant number, since it is smaller than the sum of its proper divisors (16747359787938).

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

12021111012222 is a wasteful number, since it uses less digits than its factorization.

12021111012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17124089785 (or 17124089779 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12021111012222 its reverse (22221011112021), we get a palindrome (34242122124243).

The spelling of 12021111012222 in words is "twelve trillion, twenty-one billion, one hundred eleven million, twelve thousand, two hundred twenty-two".