211313222113 has 6 divisors (see below), whose sum is σ = 245813340066. Its totient is φ = 181125618912.

The previous prime is 211313222111. The next prime is 211313222161. The reversal of 211313222113 is 311222313112.

It can be written as a sum of positive squares in only one way, i.e., 172680140304 + 38633081809 = 415548^2 + 196553^2 .

It is not a de Polignac number, because 211313222113 - 2¹ = 211313222111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211313222111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2156257320 + ... + 2156257417.

It is an arithmetic number, because the mean of its divisors is an integer number (40968890011).

Almost surely, 2^211313222113 is an apocalyptic number.

It is an amenable number.

211313222113 is a deficient number, since it is larger than the sum of its proper divisors (34500117953).

211313222113 is an equidigital number, since it uses as much as digits as its factorization.

211313222113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312514751 (or 4312514744 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 211313222113 its reverse (311222313112), we get a palindrome (522535535225).

Subtracting 211313222113 from its reverse (311222313112), we obtain a palindrome (99909090999).

The spelling of 211313222113 in words is "two hundred eleven billion, three hundred thirteen million, two hundred twenty-two thousand, one hundred thirteen".