102111411 has 4 divisors (see below), whose sum is σ = 136148552. Its totient is φ = 68074272.

The previous prime is 102111397. The next prime is 102111431. The reversal of 102111411 is 114111201.

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

It is not a de Polignac number, because 102111411 - 2¹³ = 102103219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102111431) 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, 17018566 + ... + 17018571.

It is an arithmetic number, because the mean of its divisors is an integer number (34037138).

Almost surely, 2^102111411 is an apocalyptic number.

102111411 is a deficient number, since it is larger than the sum of its proper divisors (34037141).

102111411 is an equidigital number, since it uses as much as digits as its factorization.

102111411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34037140.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 102111411 is about 10105.0190994377. The cubic root of 102111411 is about 467.4029249287.

Adding to 102111411 its reverse (114111201), we get a palindrome (216222612).

The spelling of 102111411 in words is "one hundred two million, one hundred eleven thousand, four hundred eleven".