20201043011 has 4 divisors (see below), whose sum is σ = 20201658192. Its totient is φ = 20200427832.

The previous prime is 20201042987. The next prime is 20201043013. The reversal of 20201043011 is 11034010202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20201043011 - 2²⁶ = 20133934147 is a prime.

It is a super-2 number, since 2×20201043011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201043013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255380 + ... + 324993.

It is an arithmetic number, because the mean of its divisors is an integer number (5050414548).

Almost surely, 2^20201043011 is an apocalyptic number.

20201043011 is a deficient number, since it is larger than the sum of its proper divisors (615181).

20201043011 is an equidigital number, since it uses as much as digits as its factorization.

20201043011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615180.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20201043011 its reverse (11034010202), we get a palindrome (31235053213).

The spelling of 20201043011 in words is "twenty billion, two hundred one million, forty-three thousand, eleven".