4135121111 has 4 divisors (see below), whose sum is σ = 4511041224. Its totient is φ = 3759201000.

The previous prime is 4135121099. The next prime is 4135121129. The reversal of 4135121111 is 1111215314.

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-4135121111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4135141111) 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, 187960040 + ... + 187960061.

It is an arithmetic number, because the mean of its divisors is an integer number (1127760306).

Almost surely, 2^4135121111 is an apocalyptic number.

4135121111 is a deficient number, since it is larger than the sum of its proper divisors (375920113).

4135121111 is a wasteful number, since it uses less digits than its factorization.

4135121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375920112.

The product of its digits is 120, while the sum is 20.

The square root of 4135121111 is about 64304.9073632798. The cubic root of 4135121111 is about 1605.0777628171.

Adding to 4135121111 its reverse (1111215314), we get a palindrome (5246336425).

The spelling of 4135121111 in words is "four billion, one hundred thirty-five million, one hundred twenty-one thousand, one hundred eleven".