20002011221201 has 4 divisors (see below), whose sum is σ = 20691735746100. Its totient is φ = 19312286696304.

The previous prime is 20002011221141. The next prime is 20002011221207. The reversal of 20002011221201 is 10212211020002.

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 9866829604801 + 10135181616400 = 3141151^2 + 3183580^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002011221201 - 2¹⁸ = 20002010959057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002011221207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344862262406 + ... + 344862262463.

It is an arithmetic number, because the mean of its divisors is an integer number (5172933936525).

Almost surely, 2^{20002011221201} is an apocalyptic number.

It is an amenable number.

20002011221201 is a deficient number, since it is larger than the sum of its proper divisors (689724524899).

20002011221201 is an equidigital number, since it uses as much as digits as its factorization.

20002011221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689724524898.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20002011221201 its reverse (10212211020002), we get a palindrome (30214222241203).

The spelling of 20002011221201 in words is "twenty trillion, two billion, eleven million, two hundred twenty-one thousand, two hundred one".