5135121111 has 4 divisors (see below), whose sum is σ = 6846828152. Its totient is φ = 3423414072.

The previous prime is 5135121073. The next prime is 5135121143. The reversal of 5135121111 is 1111215315.

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

It is not a de Polignac number, because 5135121111 - 2⁷ = 5135120983 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 (5135123111) 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, 855853516 + ... + 855853521.

It is an arithmetic number, because the mean of its divisors is an integer number (1711707038).

Almost surely, 2^5135121111 is an apocalyptic number.

5135121111 is a deficient number, since it is larger than the sum of its proper divisors (1711707041).

5135121111 is a wasteful number, since it uses less digits than its factorization.

5135121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711707040.

The product of its digits is 150, while the sum is 21.

The square root of 5135121111 is about 71659.7593562803. The cubic root of 5135121111 is about 1725.2428263915.

Adding to 5135121111 its reverse (1111215315), we get a palindrome (6246336426).

The spelling of 5135121111 in words is "five billion, one hundred thirty-five million, one hundred twenty-one thousand, one hundred eleven".