21111112000011 has 16 divisors (see below), whose sum is σ = 30722341650048. Its totient is φ = 12788250979200.

The previous prime is 21111111999959. The next prime is 21111112000039. The reversal of 21111112000011 is 11000021111112.

It is not a de Polignac number, because 21111112000011 - 2²² = 21111107805707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21111111000011) 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 15 ways as a sum of consecutive naturals, for example, 158991486 + ... + 159124211.

It is an arithmetic number, because the mean of its divisors is an integer number (1920146353128).

Almost surely, 2^{21111112000011} is an apocalyptic number.

21111112000011 is a deficient number, since it is larger than the sum of its proper divisors (9611229650037).

21111112000011 is a wasteful number, since it uses less digits than its factorization.

21111112000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318117722.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21111112000011 its reverse (11000021111112), we get a palindrome (32111133111123).

The spelling of 21111112000011 in words is "twenty-one trillion, one hundred eleven billion, one hundred twelve million, eleven", and thus it is an aban number.