20001020011201 has 4 divisors (see below), whose sum is σ = 20199049912404. Its totient is φ = 19802990110000.

The previous prime is 20001020011139. The next prime is 20001020011237. The reversal of 20001020011201 is 10211002010002.

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 8377557148801 + 11623462862400 = 2894401^2 + 3409320^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001020011201 - 2⁷ = 20001020011073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001020021201) 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, 99014950450 + ... + 99014950651.

It is an arithmetic number, because the mean of its divisors is an integer number (5049762478101).

Almost surely, 2^{20001020011201} is an apocalyptic number.

It is an amenable number.

20001020011201 is a deficient number, since it is larger than the sum of its proper divisors (198029901203).

20001020011201 is a wasteful number, since it uses less digits than its factorization.

20001020011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198029901202.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20001020011201 its reverse (10211002010002), we get a palindrome (30212022021203).

The spelling of 20001020011201 in words is "twenty trillion, one billion, twenty million, eleven thousand, two hundred one".