12201220020001 has 4 divisors (see below), whose sum is σ = 12210106561812. Its totient is φ = 12192333478192.

The previous prime is 12201220019987. The next prime is 12201220020007. The reversal of 12201220020001 is 10002002210221.

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 11894083488400 + 307136531601 = 3448780^2 + 554199^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201220020001 - 2¹⁵ = 12201219987233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201220020007) 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 3 ways as a sum of consecutive naturals, for example, 4443268846 + ... + 4443271591.

It is an arithmetic number, because the mean of its divisors is an integer number (3052526640453).

Almost surely, 2^{12201220020001} is an apocalyptic number.

It is an amenable number.

12201220020001 is a deficient number, since it is larger than the sum of its proper divisors (8886541811).

12201220020001 is an equidigital number, since it uses as much as digits as its factorization.

12201220020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8886541810.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12201220020001 its reverse (10002002210221), we get a palindrome (22203222230222).

The spelling of 12201220020001 in words is "twelve trillion, two hundred one billion, two hundred twenty million, twenty thousand, one".