7135230221 has 4 divisors (see below), whose sum is σ = 8154548832. Its totient is φ = 6115911612.

The previous prime is 7135230211. The next prime is 7135230233. The reversal of 7135230221 is 1220325317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7135230221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7135230211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509659295 + ... + 509659308.

It is an arithmetic number, because the mean of its divisors is an integer number (2038637208).

Almost surely, 2^7135230221 is an apocalyptic number.

It is an amenable number.

7135230221 is a deficient number, since it is larger than the sum of its proper divisors (1019318611).

7135230221 is a wasteful number, since it uses less digits than its factorization.

7135230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019318610.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 7135230221 is about 84470.2919433809. The cubic root of 7135230221 is about 1925.1710846763.

Adding to 7135230221 its reverse (1220325317), we get a palindrome (8355555538).

The spelling of 7135230221 in words is "seven billion, one hundred thirty-five million, two hundred thirty thousand, two hundred twenty-one".