211313255611 has 4 divisors (see below), whose sum is σ = 212833495000. Its totient is φ = 209793016224.

The previous prime is 211313255603. The next prime is 211313255639. The reversal of 211313255611 is 116552313112.

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

It is a cyclic number.

It is not a de Polignac number, because 211313255611 - 2³ = 211313255603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211313255641) 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, 760119486 + ... + 760119763.

It is an arithmetic number, because the mean of its divisors is an integer number (53208373750).

Almost surely, 2^211313255611 is an apocalyptic number.

211313255611 is a deficient number, since it is larger than the sum of its proper divisors (1520239389).

211313255611 is a wasteful number, since it uses less digits than its factorization.

211313255611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520239388.

The product of its digits is 5400, while the sum is 31.

Adding to 211313255611 its reverse (116552313112), we get a palindrome (327865568723).

The spelling of 211313255611 in words is "two hundred eleven billion, three hundred thirteen million, two hundred fifty-five thousand, six hundred eleven".