21110110002111 has 64 divisors (see below), whose sum is σ = 32753018188800. Its totient is φ = 11985629128704.

The previous prime is 21110110002041. The next prime is 21110110002229. The reversal of 21110110002111 is 11120001101112.

It is not a de Polignac number, because 21110110002111 - 2³⁷ = 20972671048639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110110002511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25844976 + ... + 26649258.

It is an arithmetic number, because the mean of its divisors is an integer number (511765909200).

Almost surely, 2^{21110110002111} is an apocalyptic number.

21110110002111 is a deficient number, since it is larger than the sum of its proper divisors (11642908186689).

21110110002111 is a wasteful number, since it uses less digits than its factorization.

21110110002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805360.

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

Adding to 21110110002111 its reverse (11120001101112), we get a palindrome (32230111103223).

The spelling of 21110110002111 in words is "twenty-one trillion, one hundred ten billion, one hundred ten million, two thousand, one hundred eleven".