1135212143 has 4 divisors (see below), whose sum is σ = 1222536168. Its totient is φ = 1047888120.

The previous prime is 1135212101. The next prime is 1135212151. The reversal of 1135212143 is 3412125311.

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 1135212143 - 2³⁰ = 61470319 is a prime.

It is a super-2 number, since 2×1135212143² = 2577413219229304898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135212443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43661993 + ... + 43662018.

It is an arithmetic number, because the mean of its divisors is an integer number (305634042).

Almost surely, 2^1135212143 is an apocalyptic number.

1135212143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1135212143 is a deficient number, since it is larger than the sum of its proper divisors (87324025).

1135212143 is an equidigital number, since it uses as much as digits as its factorization.

1135212143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87324024.

The product of its digits is 720, while the sum is 23.

The square root of 1135212143 is about 33692.9093875848. The cubic root of 1135212143 is about 1043.1794168340.

Adding to 1135212143 its reverse (3412125311), we get a palindrome (4547337454).

The spelling of 1135212143 in words is "one billion, one hundred thirty-five million, two hundred twelve thousand, one hundred forty-three".