12211022121201 has 10 divisors (see below), whose sum is σ = 18241156502162. Its totient is φ = 8140681414080.

The previous prime is 12211022121197. The next prime is 12211022121203. The reversal of 12211022121201 is 10212122011221.

12211022121201 is a `hidden beast` number, since 1 + 221 + 1 + 0 + 221 + 21 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11798503661025 + 412518460176 = 3434895^2 + 642276^2 .

It is not a de Polignac number, because 12211022121201 - 2² = 12211022121197 is a prime.

It is a super-2 number, since 2×12211022121201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211022121203) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75376679680 + ... + 75376679841.

Almost surely, 2^{12211022121201} is an apocalyptic number.

It is an amenable number.

12211022121201 is a deficient number, since it is larger than the sum of its proper divisors (6030134380961).

12211022121201 is an equidigital number, since it uses as much as digits as its factorization.

12211022121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150753359533 (or 150753359524 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12211022121201 its reverse (10212122011221), we get a palindrome (22423144132422).

The spelling of 12211022121201 in words is "twelve trillion, two hundred eleven billion, twenty-two million, one hundred twenty-one thousand, two hundred one".