102112210111 has 4 divisors (see below), whose sum is σ = 102349129824. Its totient is φ = 101875290400.

The previous prime is 102112210073. The next prime is 102112210141. The reversal of 102112210111 is 111012211201.

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 102112210111 - 2¹¹ = 102112208063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102112210091 and 102112210100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112210141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118459210 + ... + 118460071.

It is an arithmetic number, because the mean of its divisors is an integer number (25587282456).

Almost surely, 2^102112210111 is an apocalyptic number.

102112210111 is a deficient number, since it is larger than the sum of its proper divisors (236919713).

102112210111 is an equidigital number, since it uses as much as digits as its factorization.

102112210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236919712.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102112210111 its reverse (111012211201), we get a palindrome (213124421312).

The spelling of 102112210111 in words is "one hundred two billion, one hundred twelve million, two hundred ten thousand, one hundred eleven".