12210066001221 has 32 divisors (see below), whose sum is σ = 18027215041536. Its totient is φ = 7288765440000.

The previous prime is 12210066001219. The next prime is 12210066001223.

12210066001221 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (12210066001219) and next prime (12210066001223).

It is not a de Polignac number, because 12210066001221 - 2¹ = 12210066001219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210066001191 and 12210066001200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210066001223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19482181 + ... + 20099141.

It is an arithmetic number, because the mean of its divisors is an integer number (563350470048).

Almost surely, 2^{12210066001221} is an apocalyptic number.

12210066001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12210066001221 is a deficient number, since it is larger than the sum of its proper divisors (5817149040315).

12210066001221 is a wasteful number, since it uses less digits than its factorization.

12210066001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625993.

The product of its (nonzero) digits is 576, while the sum is 24.

It can be divided in two parts, 1221006 and 6001221, that added together give a palindrome (7222227).

The spelling of 12210066001221 in words is "twelve trillion, two hundred ten billion, sixty-six million, one thousand, two hundred twenty-one".