2110221211111 has 64 divisors (see below), whose sum is σ = 2491372800000. Its totient is φ = 1769728891392.

The previous prime is 2110221211081. The next prime is 2110221211121. The reversal of 2110221211111 is 1111121220112.

It is a cyclic number.

It is not a de Polignac number, because 2110221211111 - 2⁵ = 2110221211079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110221211121) 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, 1264361785 + ... + 1264363453.

It is an arithmetic number, because the mean of its divisors is an integer number (38927700000).

Almost surely, 2^{2110221211111} is an apocalyptic number.

2110221211111 is a deficient number, since it is larger than the sum of its proper divisors (381151588889).

2110221211111 is a wasteful number, since it uses less digits than its factorization.

2110221211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816.

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

Adding to 2110221211111 its reverse (1111121220112), we get a palindrome (3221342431223).

Subtracting from 2110221211111 its reverse (1111121220112), we obtain a palindrome (999099990999).

The spelling of 2110221211111 in words is "two trillion, one hundred ten billion, two hundred twenty-one million, two hundred eleven thousand, one hundred eleven".