102100101111 has 12 divisors (see below), whose sum is σ = 147750533320. Its totient is φ = 67940914320.

The previous prime is 102100101109. The next prime is 102100101133. The reversal of 102100101111 is 111101001201.

It is not a de Polignac number, because 102100101111 - 2¹ = 102100101109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102100101093 and 102100101102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100101161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10479841 + ... + 10489578.

Almost surely, 2^102100101111 is an apocalyptic number.

102100101111 is a deficient number, since it is larger than the sum of its proper divisors (45650432209).

102100101111 is a wasteful number, since it uses less digits than its factorization.

102100101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20969966 (or 20969963 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 102100101111 its reverse (111101001201), we get a palindrome (213201102312).

The spelling of 102100101111 in words is "one hundred two billion, one hundred million, one hundred one thousand, one hundred eleven".