102111102111 has 24 divisors (see below), whose sum is σ = 137931453712. Its totient is φ = 67193280000.

The previous prime is 102111102109. The next prime is 102111102113. The reversal of 102111102111 is 111201111201.

It is an interprime number because it is at equal distance from previous prime (102111102109) and next prime (102111102113).

It is not a de Polignac number, because 102111102111 - 2¹ = 102111102109 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 (102111102113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10308261 + ... + 10318161.

Almost surely, 2^102111102111 is an apocalyptic number.

102111102111 is a deficient number, since it is larger than the sum of its proper divisors (35820351601).

102111102111 is an equidigital number, since it uses as much as digits as its factorization.

102111102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10443 (or 10342 counting only the distinct ones).

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

Adding to 102111102111 its reverse (111201111201), we get a palindrome (213312213312).

The spelling of 102111102111 in words is "one hundred two billion, one hundred eleven million, one hundred two thousand, one hundred eleven".