211222001111111 has 8 divisors (see below), whose sum is σ = 211864160112000. Its totient is φ = 210580717584888.

The previous prime is 211222001111063. The next prime is 211222001111131. The reversal of 211222001111111 is 111111100222112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211222001111111 - 2⁴⁶ = 140853256933447 is a prime.

It is a super-2 number, since 2×211222001111111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211222001111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222001111131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218385401 + ... + 219350466.

It is an arithmetic number, because the mean of its divisors is an integer number (26483020014000).

Almost surely, 2^{211222001111111} is an apocalyptic number.

211222001111111 is a deficient number, since it is larger than the sum of its proper divisors (642159000889).

211222001111111 is an equidigital number, since it uses as much as digits as its factorization.

211222001111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437737333.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211222001111111 its reverse (111111100222112), we get a palindrome (322333101333223).

It can be divided in two parts, 211222001 and 111111, that added together give a palindrome (211333112).

The spelling of 211222001111111 in words is "two hundred eleven trillion, two hundred twenty-two billion, one million, one hundred eleven thousand, one hundred eleven".