102111101111 has 8 divisors (see below), whose sum is σ = 105264292560. Its totient is φ = 99005326272.

The previous prime is 102111101087. The next prime is 102111101123. The reversal of 102111101111 is 111101111201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102111101111 - 2¹⁰ = 102111100087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102111101092 and 102111101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111101711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11849780 + ... + 11858393.

It is an arithmetic number, because the mean of its divisors is an integer number (13158036570).

Almost surely, 2^102111101111 is an apocalyptic number.

102111101111 is a deficient number, since it is larger than the sum of its proper divisors (3153191449).

102111101111 is an equidigital number, since it uses as much as digits as its factorization.

102111101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23708305.

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

Adding to 102111101111 its reverse (111101111201), we get a palindrome (213212212312).

The spelling of 102111101111 in words is "one hundred two billion, one hundred eleven million, one hundred one thousand, one hundred eleven".