211200021011 has 16 divisors (see below), whose sum is σ = 243099537600. Its totient is φ = 179736219648.

The previous prime is 211200020989. The next prime is 211200021091. The reversal of 211200021011 is 110120002112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211200021011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211200020983 and 211200021001.

It is not an unprimeable number, because it can be changed into a prime (211200021091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534095 + ... + 841223.

It is an arithmetic number, because the mean of its divisors is an integer number (15193721100).

Almost surely, 2^211200021011 is an apocalyptic number.

211200021011 is a deficient number, since it is larger than the sum of its proper divisors (31899516589).

211200021011 is a wasteful number, since it uses less digits than its factorization.

211200021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307838.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211200021011 its reverse (110120002112), we get a palindrome (321320023123).

The spelling of 211200021011 in words is "two hundred eleven billion, two hundred million, twenty-one thousand, eleven".