20111012210211 has 32 divisors (see below), whose sum is σ = 30177617648640. Its totient is φ = 11830997735424.

The previous prime is 20111012210183. The next prime is 20111012210213. The reversal of 20111012210211 is 11201221011102.

It is a happy number.

It is not a de Polignac number, because 20111012210211 - 2¹⁷ = 20111012079139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111012210213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127498366 + ... + 127656003.

It is an arithmetic number, because the mean of its divisors is an integer number (943050551520).

Almost surely, 2^{20111012210211} is an apocalyptic number.

20111012210211 is a deficient number, since it is larger than the sum of its proper divisors (10066605438429).

20111012210211 is a wasteful number, since it uses less digits than its factorization.

20111012210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255154475.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111012210211 its reverse (11201221011102), we get a palindrome (31312233221313).

The spelling of 20111012210211 in words is "twenty trillion, one hundred eleven billion, twelve million, two hundred ten thousand, two hundred eleven".