102135611 has 4 divisors (see below), whose sum is σ = 104062752. Its totient is φ = 100208472.

The previous prime is 102135569. The next prime is 102135613. The reversal of 102135611 is 116531201.

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

It is a cyclic number.

It is not a de Polignac number, because 102135611 - 2⁶ = 102135547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102135613) 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, 963491 + ... + 963596.

It is an arithmetic number, because the mean of its divisors is an integer number (26015688).

Almost surely, 2^102135611 is an apocalyptic number.

102135611 is a deficient number, since it is larger than the sum of its proper divisors (1927141).

102135611 is an equidigital number, since it uses as much as digits as its factorization.

102135611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927140.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 102135611 is about 10106.2164532529. The cubic root of 102135611 is about 467.4398462262.

Adding to 102135611 its reverse (116531201), we get a palindrome (218666812).

The spelling of 102135611 in words is "one hundred two million, one hundred thirty-five thousand, six hundred eleven".