21111110110011 has 16 divisors (see below), whose sum is σ = 28534839379200. Its totient is φ = 13881293293920.

The previous prime is 21111110109997. The next prime is 21111110110063. The reversal of 21111110110011 is 11001101111112.

It is not a de Polignac number, because 21111110110011 - 2²⁵ = 21111076555579 is a prime.

It is a super-3 number, since 3×21111110110011³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21111110110081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70621780 + ... + 70920081.

It is an arithmetic number, because the mean of its divisors is an integer number (1783427461200).

Almost surely, 2^{21111110110011} is an apocalyptic number.

21111110110011 is a deficient number, since it is larger than the sum of its proper divisors (7423729269189).

21111110110011 is a wasteful number, since it uses less digits than its factorization.

21111110110011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141542546.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 21111110110011 its reverse (11001101111112), we get a palindrome (32112211221123).

It can be divided in two parts, 211111101 and 10011, that added together give a palindrome (211121112).

The spelling of 21111110110011 in words is "twenty-one trillion, one hundred eleven billion, one hundred ten million, one hundred ten thousand, eleven".