20201020202011 has 4 divisors (see below), whose sum is σ = 22037476584024. Its totient is φ = 18364563820000.

The previous prime is 20201020201969. The next prime is 20201020202029. The reversal of 20201020202011 is 11020202010202.

It is a happy number.

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 20201020202011 - 2¹³ = 20201020193819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201020201982 and 20201020202000.

It is not an unprimeable number, because it can be changed into a prime (20201020202081) 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, 918228190990 + ... + 918228191011.

It is an arithmetic number, because the mean of its divisors is an integer number (5509369146006).

Almost surely, 2^{20201020202011} is an apocalyptic number.

20201020202011 is a deficient number, since it is larger than the sum of its proper divisors (1836456382013).

20201020202011 is a wasteful number, since it uses less digits than its factorization.

20201020202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836456382012.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20201020202011 its reverse (11020202010202), we get a palindrome (31221222212213).

The spelling of 20201020202011 in words is "twenty trillion, two hundred one billion, twenty million, two hundred two thousand, eleven".