20211020211011 has 8 divisors (see below), whose sum is σ = 23100871661664. Its totient is φ = 17321809472640.

The previous prime is 20211020211001. The next prime is 20211020211149. The reversal of 20211020211011 is 11011202011202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211020211011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211020211001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160110470 + ... + 160236651.

It is an arithmetic number, because the mean of its divisors is an integer number (2887608957708).

Almost surely, 2^{20211020211011} is an apocalyptic number.

20211020211011 is a deficient number, since it is larger than the sum of its proper divisors (2889851450653).

20211020211011 is an equidigital number, since it uses as much as digits as its factorization.

20211020211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320356141.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20211020211011 its reverse (11011202011202), we get a palindrome (31222222222213).

The spelling of 20211020211011 in words is "twenty trillion, two hundred eleven billion, twenty million, two hundred eleven thousand, eleven".