2153135111 has 4 divisors (see below), whose sum is σ = 2155433952. Its totient is φ = 2150836272.

The previous prime is 2153135107. The next prime is 2153135113. The reversal of 2153135111 is 1115313512.

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 2153135111 - 2² = 2153135107 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 (2153135113) 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, 1148015 + ... + 1149888.

It is an arithmetic number, because the mean of its divisors is an integer number (538858488).

Almost surely, 2^2153135111 is an apocalyptic number.

2153135111 is a deficient number, since it is larger than the sum of its proper divisors (2298841).

2153135111 is an equidigital number, since it uses as much as digits as its factorization.

2153135111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298840.

The product of its digits is 450, while the sum is 23.

The square root of 2153135111 is about 46401.8869336151. The cubic root of 2153135111 is about 1291.2899203937.

Adding to 2153135111 its reverse (1115313512), we get a palindrome (3268448623).

It can be divided in two parts, 215313511 and 1, that added together give a palindrome (215313512).

The spelling of 2153135111 in words is "two billion, one hundred fifty-three million, one hundred thirty-five thousand, one hundred eleven".