211020202011 has 16 divisors (see below), whose sum is σ = 289739361824. Its totient is φ = 136510977024.

The previous prime is 211020202007. The next prime is 211020202049. The reversal of 211020202011 is 110202020112.

It is not a de Polignac number, because 211020202011 - 2² = 211020202007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211020202111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2506966 + ... + 2589771.

It is an arithmetic number, because the mean of its divisors is an integer number (18108710114).

Almost surely, 2^211020202011 is an apocalyptic number.

211020202011 is a deficient number, since it is larger than the sum of its proper divisors (78719159813).

211020202011 is a wasteful number, since it uses less digits than its factorization.

211020202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097150.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211020202011 its reverse (110202020112), we get a palindrome (321222222123).

It can be divided in two parts, 2 and 11020202011, that multiplied together give a palindrome (22040404022).

The spelling of 211020202011 in words is "two hundred eleven billion, twenty million, two hundred two thousand, eleven".