20011102002211 has 4 divisors (see below), whose sum is σ = 20023326256752. Its totient is φ = 19998877747672.

The previous prime is 20011102002209. The next prime is 20011102002239. The reversal of 20011102002211 is 11220020111002.

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 20011102002211 - 2¹ = 20011102002209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011102002191 and 20011102002200.

It is not an unprimeable number, because it can be changed into a prime (20011702002211) 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, 6112124815 + ... + 6112128088.

It is an arithmetic number, because the mean of its divisors is an integer number (5005831564188).

Almost surely, 2^{20011102002211} is an apocalyptic number.

20011102002211 is a deficient number, since it is larger than the sum of its proper divisors (12224254541).

20011102002211 is a wasteful number, since it uses less digits than its factorization.

20011102002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12224254540.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20011102002211 its reverse (11220020111002), we get a palindrome (31231122113213).

The spelling of 20011102002211 in words is "twenty trillion, eleven billion, one hundred two million, two thousand, two hundred eleven".