102110111111 has 4 divisors (see below), whose sum is σ = 102118557192. Its totient is φ = 102101665032.

The previous prime is 102110111093. The next prime is 102110111177. The reversal of 102110111111 is 111111011201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102110111111 - 2¹⁴ = 102110094727 is a prime.

It is a super-2 number, since 2×102110111111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

102110111111 is a modest number, since divided by 111111 gives 102110 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 102110111092 and 102110111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110110111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4204880 + ... + 4229093.

It is an arithmetic number, because the mean of its divisors is an integer number (25529639298).

Almost surely, 2^102110111111 is an apocalyptic number.

102110111111 is a deficient number, since it is larger than the sum of its proper divisors (8446081).

102110111111 is an equidigital number, since it uses as much as digits as its factorization.

102110111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8446080.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 102110111111 its reverse (111111011201), we get a palindrome (213221122312).

The spelling of 102110111111 in words is "one hundred two billion, one hundred ten million, one hundred eleven thousand, one hundred eleven".