211210221001111 has 8 divisors (see below), whose sum is σ = 216474651211280. Its totient is φ = 205961816454912.

The previous prime is 211210221001103. The next prime is 211210221001123. The reversal of 211210221001111 is 111100122012112.

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 211210221001111 - 2³ = 211210221001103 is a prime.

It is a super-2 number, since 2×211210221001111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210221001211) 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, 4006389306 + ... + 4006442023.

It is an arithmetic number, because the mean of its divisors is an integer number (27059331401410).

Almost surely, 2^{211210221001111} is an apocalyptic number.

211210221001111 is a deficient number, since it is larger than the sum of its proper divisors (5264430210169).

211210221001111 is an equidigital number, since it uses as much as digits as its factorization.

211210221001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8012831985.

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

Adding to 211210221001111 its reverse (111100122012112), we get a palindrome (322310343013223).

The spelling of 211210221001111 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twenty-one million, one thousand, one hundred eleven".