12222000022221 has 12 divisors (see below), whose sum is σ = 19258909126080. Its totient is φ = 7407272740680.

The previous prime is 12222000022217. The next prime is 12222000022229.

12222000022221 is a `hidden beast` number, since 1 + 222 + 200 + 0 + 0 + 22 + 221 = 666.

12222000022221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12222000022221 - 2² = 12222000022217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12222000022194 and 12222000022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222000022229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61727272741 + ... + 61727272938.

It is an arithmetic number, because the mean of its divisors is an integer number (1604909093840).

Almost surely, 2^{12222000022221} is an apocalyptic number.

12222000022221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12222000022221 is a deficient number, since it is larger than the sum of its proper divisors (7036909103859).

12222000022221 is a wasteful number, since it uses less digits than its factorization.

12222000022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123454545696 (or 123454545693 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

It can be divided in two parts, 122220000 and 22221, that added together give a palindrome (122242221).

The spelling of 12222000022221 in words is "twelve trillion, two hundred twenty-two billion, twenty-two thousand, two hundred twenty-one".