20201200002001 has 2 divisors, whose sum is σ = 20201200002002. Its totient is φ = 20201200002000.

The previous prime is 20201200001963. The next prime is 20201200002017. The reversal of 20201200002001 is 10020000210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13066424792001 + 7134775210000 = 3614751^2 + 2671100^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201200002001 - 2³⁹ = 19651444188113 is a prime.

It is not a weakly prime, because it can be changed into another prime (20201200002601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100600001000 + 10100600001001.

It is an arithmetic number, because the mean of its divisors is an integer number (10100600001001).

Almost surely, 2^{20201200002001} is an apocalyptic number.

It is an amenable number.

20201200002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201200002001 is an equidigital number, since it uses as much as digits as its factorization.

20201200002001 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 20201200002001 its reverse (10020000210202), we get a palindrome (30221200212203).

The spelling of 20201200002001 in words is "twenty trillion, two hundred one billion, two hundred million, two thousand, one".