102111104111 has 4 divisors (see below), whose sum is σ = 102281574000. Its totient is φ = 101940634224.

The previous prime is 102111104099. The next prime is 102111104143. The reversal of 102111104111 is 111401111201.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102111104111 is a prime.

It is a super-2 number, since 2×102111104111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111100111) 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, 85234046 + ... + 85235243.

It is an arithmetic number, because the mean of its divisors is an integer number (25570393500).

Almost surely, 2^102111104111 is an apocalyptic number.

102111104111 is a deficient number, since it is larger than the sum of its proper divisors (170469889).

102111104111 is an equidigital number, since it uses as much as digits as its factorization.

102111104111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170469888.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 102111104111 its reverse (111401111201), we get a palindrome (213512215312).

The spelling of 102111104111 in words is "one hundred two billion, one hundred eleven million, one hundred four thousand, one hundred eleven".