213232230130321 has 4 divisors (see below), whose sum is σ = 213305682503232. Its totient is φ = 213158777757412.

The previous prime is 213232230130103. The next prime is 213232230130331. The reversal of 213232230130321 is 123031032232312.

It is a happy number.

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 not a de Polignac number, because 213232230130321 - 2³⁵ = 213197870391953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213232230130321.

It is not an unprimeable number, because it can be changed into a prime (213232230130331) 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, 36726182101 + ... + 36726187906.

It is an arithmetic number, because the mean of its divisors is an integer number (53326420625808).

Almost surely, 2^{213232230130321} is an apocalyptic number.

It is an amenable number.

213232230130321 is a deficient number, since it is larger than the sum of its proper divisors (73452372911).

213232230130321 is an equidigital number, since it uses as much as digits as its factorization.

213232230130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73452372910.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 213232230130321 its reverse (123031032232312), we get a palindrome (336263262362633).

The spelling of 213232230130321 in words is "two hundred thirteen trillion, two hundred thirty-two billion, two hundred thirty million, one hundred thirty thousand, three hundred twenty-one".