12212201220001 has 4 divisors (see below), whose sum is σ = 12212564312212. Its totient is φ = 12211838127792.

The previous prime is 12212201219963. The next prime is 12212201220019. The reversal of 12212201220001 is 10002210221221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3487556250000 + 8724644970001 = 1867500^2 + 2953751^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212201220001 - 2¹⁹ = 12212200695713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212201220031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181495650 + ... + 181562923.

It is an arithmetic number, because the mean of its divisors is an integer number (3053141078053).

Almost surely, 2^{12212201220001} is an apocalyptic number.

It is an amenable number.

12212201220001 is a deficient number, since it is larger than the sum of its proper divisors (363092211).

12212201220001 is an equidigital number, since it uses as much as digits as its factorization.

12212201220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363092210.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12212201220001 its reverse (10002210221221), we get a palindrome (22214411441222).

The spelling of 12212201220001 in words is "twelve trillion, two hundred twelve billion, two hundred one million, two hundred twenty thousand, one".