20011021100211 has 8 divisors (see below), whose sum is σ = 27332126380944. Its totient is φ = 13015298276480.

The previous prime is 20011021100197. The next prime is 20011021100227. The reversal of 20011021100211 is 11200112011002.

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

It is a cyclic number.

It is not a de Polignac number, because 20011021100211 - 2¹⁰ = 20011021099187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20011021100281) 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, 81345614106 + ... + 81345614351.

It is an arithmetic number, because the mean of its divisors is an integer number (3416515797618).

Almost surely, 2^{20011021100211} is an apocalyptic number.

20011021100211 is a deficient number, since it is larger than the sum of its proper divisors (7321105280733).

20011021100211 is a wasteful number, since it uses less digits than its factorization.

20011021100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162691228501.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20011021100211 its reverse (11200112011002), we get a palindrome (31211133111213).

The spelling of 20011021100211 in words is "twenty trillion, eleven billion, twenty-one million, one hundred thousand, two hundred eleven".