100102111 has 4 divisors (see below), whose sum is σ = 100124424. Its totient is φ = 100079800.

The previous prime is 100102081. The next prime is 100102129. The reversal of 100102111 is 111201001.

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-100102111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100102094 and 100102103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100102181) 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, 1825 + ... + 14266.

It is an arithmetic number, because the mean of its divisors is an integer number (25031106).

Almost surely, 2^100102111 is an apocalyptic number.

100102111 is a deficient number, since it is larger than the sum of its proper divisors (22313).

100102111 is an equidigital number, since it uses as much as digits as its factorization.

100102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22312.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 100102111 is about 10005.1042473330. The cubic root of 100102111 is about 464.3168153773.

Adding to 100102111 its reverse (111201001), we get a palindrome (211303112).

It can be divided in two parts, 10010 and 2111, that added together give a palindrome (12121).

The spelling of 100102111 in words is "one hundred million, one hundred two thousand, one hundred eleven".