20010201011 has 4 divisors (see below), whose sum is σ = 20013140592. Its totient is φ = 20007261432.

The previous prime is 20010200971. The next prime is 20010201019. The reversal of 20010201011 is 11010201002.

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 20010201011 - 2¹⁸ = 20009938867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20010201011.

It is not an unprimeable number, because it can be changed into a prime (20010201019) 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, 1459556 + ... + 1473201.

It is an arithmetic number, because the mean of its divisors is an integer number (5003285148).

Almost surely, 2^20010201011 is an apocalyptic number.

20010201011 is a deficient number, since it is larger than the sum of its proper divisors (2939581).

20010201011 is an equidigital number, since it uses as much as digits as its factorization.

20010201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939580.

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

Adding to 20010201011 its reverse (11010201002), we get a palindrome (31020402013).

Subtracting from 20010201011 its reverse (11010201002), we obtain a palindrome (9000000009).

The spelling of 20010201011 in words is "twenty billion, ten million, two hundred one thousand, eleven".