12221102002221 has 24 divisors (see below), whose sum is σ = 20429891239680. Its totient is φ = 6895088287776.

The previous prime is 12221102002211. The next prime is 12221102002261. The reversal of 12221102002221 is 12220020112221.

It is a happy number.

12221102002221 is a `hidden beast` number, since 12 + 221 + 10 + 200 + 2 + 221 = 666.

It is not a de Polignac number, because 12221102002221 - 2²² = 12221097807917 is a prime.

It is a super-3 number, since 3×12221102002221³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12221102002194 and 12221102002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221102002211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1227752910 + ... + 1227762863.

It is an arithmetic number, because the mean of its divisors is an integer number (851245468320).

Almost surely, 2^{12221102002221} is an apocalyptic number.

It is an amenable number.

12221102002221 is a deficient number, since it is larger than the sum of its proper divisors (8208789237459).

12221102002221 is a wasteful number, since it uses less digits than its factorization.

12221102002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455515865 (or 2455515862 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12221102002221 its reverse (12220020112221), we get a palindrome (24441122114442).

The spelling of 12221102002221 in words is "twelve trillion, two hundred twenty-one billion, one hundred two million, two thousand, two hundred twenty-one".