12220002002221 has 8 divisors (see below), whose sum is σ = 13160154864920. Its totient is φ = 11279870955072.

The previous prime is 12220002002183. The next prime is 12220002002227. The reversal of 12220002002221 is 12220020002221.

It can be written as a sum of positive squares in 4 ways, for example, as 622503642121 + 11597498360100 = 788989^2 + 3405510^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12220002002221 - 2²⁹ = 12219465131309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220002002195 and 12220002002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220002002227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4281150 + ... + 6539743.

It is an arithmetic number, because the mean of its divisors is an integer number (1645019358115).

Almost surely, 2^{12220002002221} is an apocalyptic number.

It is an amenable number.

12220002002221 is a deficient number, since it is larger than the sum of its proper divisors (940152862699).

12220002002221 is a wasteful number, since it uses less digits than its factorization.

12220002002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10907775.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12220002002221 its reverse (12220020002221), we get a palindrome (24440022004442).

The spelling of 12220002002221 in words is "twelve trillion, two hundred twenty billion, two million, two thousand, two hundred twenty-one".