12220010121221 has 8 divisors (see below), whose sum is σ = 14031914128704. Its totient is φ = 10424653182720.

The previous prime is 12220010121173. The next prime is 12220010121271. The reversal of 12220010121221 is 12212101002221.

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

It is not a de Polignac number, because 12220010121221 - 2⁶ = 12220010121157 is a prime.

It is a super-2 number, since 2×12220010121221² (a number of 27 digits) contains 22 as substring.

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 12220010121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220010121271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4136765660 + ... + 4136768613.

It is an arithmetic number, because the mean of its divisors is an integer number (1753989266088).

Almost surely, 2^{12220010121221} is an apocalyptic number.

It is an amenable number.

12220010121221 is a deficient number, since it is larger than the sum of its proper divisors (1811904007483).

12220010121221 is an equidigital number, since it uses as much as digits as its factorization.

12220010121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273534491.

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

Adding to 12220010121221 its reverse (12212101002221), we get a palindrome (24432111123442).

The spelling of 12220010121221 in words is "twelve trillion, two hundred twenty billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".