12220221010121 has 8 divisors (see below), whose sum is σ = 12499635114624. Its totient is φ = 11941615630800.

The previous prime is 12220221010099. The next prime is 12220221010141. The reversal of 12220221010121 is 12101012202221.

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 12220221010121 - 2¹⁰ = 12220221009097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12220221010121.

It is not an unprimeable number, because it can be changed into a prime (12220221010141) 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, 202150730 + ... + 202211171.

It is an arithmetic number, because the mean of its divisors is an integer number (1562454389328).

Almost surely, 2^{12220221010121} is an apocalyptic number.

It is an amenable number.

12220221010121 is a deficient number, since it is larger than the sum of its proper divisors (279414104503).

12220221010121 is an equidigital number, since it uses as much as digits as its factorization.

12220221010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404362591.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12220221010121 its reverse (12101012202221), we get a palindrome (24321233212342).

The spelling of 12220221010121 in words is "twelve trillion, two hundred twenty billion, two hundred twenty-one million, ten thousand, one hundred twenty-one".