20001000202201 has 2 divisors, whose sum is σ = 20001000202202. Its totient is φ = 20001000202200.

The previous prime is 20001000202093. The next prime is 20001000202213. The reversal of 20001000202201 is 10220200010002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13762994442201 + 6238005760000 = 3709851^2 + 2497600^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001000202201 - 2¹⁵ = 20001000169433 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001000202291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000500101100 + 10000500101101.

It is an arithmetic number, because the mean of its divisors is an integer number (10000500101101).

Almost surely, 2^{20001000202201} is an apocalyptic number.

It is an amenable number.

20001000202201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001000202201 is an equidigital number, since it uses as much as digits as its factorization.

20001000202201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20001000202201 its reverse (10220200010002), we get a palindrome (30221200212203).

The spelling of 20001000202201 in words is "twenty trillion, one billion, two hundred two thousand, two hundred one".