20001011201 has 4 divisors (see below), whose sum is σ = 20033639892. Its totient is φ = 19968382512.

The previous prime is 20001011167. The next prime is 20001011221. The reversal of 20001011201 is 10211010002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10211010002 = 2 ⋅5105505001.

It can be written as a sum of positive squares in 2 ways, for example, as 40972801 + 19960038400 = 6401^2 + 141280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001011201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001011221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16313426 + ... + 16314651.

It is an arithmetic number, because the mean of its divisors is an integer number (5008409973).

Almost surely, 2^20001011201 is an apocalyptic number.

It is an amenable number.

20001011201 is a deficient number, since it is larger than the sum of its proper divisors (32628691).

20001011201 is an equidigital number, since it uses as much as digits as its factorization.

20001011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32628690.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20001011201 its reverse (10211010002), we get a palindrome (30212021203).

The spelling of 20001011201 in words is "twenty billion, one million, eleven thousand, two hundred one".