21110002210211 has 4 divisors (see below), whose sum is σ = 21124084935000. Its totient is φ = 21095919485424.

The previous prime is 21110002210201. The next prime is 21110002210261. The reversal of 21110002210211 is 11201220001112.

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-21110002210211 is a prime.

It is a super-2 number, since 2×21110002210211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110002210201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7041360146 + ... + 7041363143.

It is an arithmetic number, because the mean of its divisors is an integer number (5281021233750).

Almost surely, 2^{21110002210211} is an apocalyptic number.

21110002210211 is a deficient number, since it is larger than the sum of its proper divisors (14082724789).

21110002210211 is a wasteful number, since it uses less digits than its factorization.

21110002210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14082724788.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110002210211 its reverse (11201220001112), we get a palindrome (32311222211323).

The spelling of 21110002210211 in words is "twenty-one trillion, one hundred ten billion, two million, two hundred ten thousand, two hundred eleven".