12221010011221 has 8 divisors (see below), whose sum is σ = 13464011030688. Its totient is φ = 11000009010000.

The previous prime is 12221010011219. The next prime is 12221010011261. The reversal of 12221010011221 is 12211001012221.

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 12221010011221 - 2¹ = 12221010011219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221010011195 and 12221010011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221010011261) 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, 5500003395 + ... + 5500005616.

It is an arithmetic number, because the mean of its divisors is an integer number (1683001378836).

Almost surely, 2^{12221010011221} is an apocalyptic number.

12221010011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12221010011221 is a deficient number, since it is larger than the sum of its proper divisors (1243001019467).

12221010011221 is a wasteful number, since it uses less digits than its factorization.

12221010011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000009123.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12221010011221 its reverse (12211001012221), we get a palindrome (24432011023442).

The spelling of 12221010011221 in words is "twelve trillion, two hundred twenty-one billion, ten million, eleven thousand, two hundred twenty-one".