211000120211101 has 4 divisors (see below), whose sum is σ = 227230898688892. Its totient is φ = 194769341733312.

The previous prime is 211000120211009. The next prime is 211000120211119. The reversal of 211000120211101 is 101112021000112.

It is a happy number.

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 10388986008025 + 200611134203076 = 3223195^2 + 14163726^2 .

It is a cyclic number.

It is not a de Polignac number, because 211000120211101 - 2²¹ = 211000118113949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 16230778477777 = 211000120211101 / (2 + 1 + 1 + 0 + 0 + 0 + 1 + 2 + 0 + 2 + 1 + 1 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000120211141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8115389238876 + ... + 8115389238901.

It is an arithmetic number, because the mean of its divisors is an integer number (56807724672223).

Almost surely, 2^{211000120211101} is an apocalyptic number.

It is an amenable number.

211000120211101 is a deficient number, since it is larger than the sum of its proper divisors (16230778477791).

211000120211101 is a wasteful number, since it uses less digits than its factorization.

211000120211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16230778477790.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211000120211101 its reverse (101112021000112), we get a palindrome (312112141211213).

The spelling of 211000120211101 in words is "two hundred eleven trillion, one hundred twenty million, two hundred eleven thousand, one hundred one".