211002321131111 has 4 divisors (see below), whose sum is σ = 211009971436824. Its totient is φ = 210994670825400.

The previous prime is 211002321131093. The next prime is 211002321131137. The reversal of 211002321131111 is 111131123200112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211002321131111 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 (211002321131171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3825111485 + ... + 3825166646.

It is an arithmetic number, because the mean of its divisors is an integer number (52752492859206).

Almost surely, 2^{211002321131111} is an apocalyptic number.

211002321131111 is a deficient number, since it is larger than the sum of its proper divisors (7650305713).

211002321131111 is an equidigital number, since it uses as much as digits as its factorization.

211002321131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650305712.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 211002321131111 its reverse (111131123200112), we get a palindrome (322133444331223).

The spelling of 211002321131111 in words is "two hundred eleven trillion, two billion, three hundred twenty-one million, one hundred thirty-one thousand, one hundred eleven".