211011021101 has 4 divisors (see below), whose sum is σ = 211027731612. Its totient is φ = 210994310592.

The previous prime is 211011021077. The next prime is 211011021157. The reversal of 211011021101 is 101120110112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16256505001 + 194754516100 = 127501^2 + 441310^2 .

It is a cyclic number.

It is not a de Polignac number, because 211011021101 - 2¹⁴ = 211011004717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211011021701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8336300 + ... + 8361573.

It is an arithmetic number, because the mean of its divisors is an integer number (52756932903).

Almost surely, 2^211011021101 is an apocalyptic number.

It is an amenable number.

211011021101 is a deficient number, since it is larger than the sum of its proper divisors (16710511).

211011021101 is a wasteful number, since it uses less digits than its factorization.

211011021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16710510.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211011021101 its reverse (101120110112), we get a palindrome (312131131213).

The spelling of 211011021101 in words is "two hundred eleven billion, eleven million, twenty-one thousand, one hundred one".