213232544501 has 4 divisors (see below), whose sum is σ = 225775635372. Its totient is φ = 200689453632.

The previous prime is 213232544489. The next prime is 213232544647. The reversal of 213232544501 is 105445232312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161499496900 + 51733047601 = 401870^2 + 227449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213232544501 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 (213232543501) 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, 6271545410 + ... + 6271545443.

It is an arithmetic number, because the mean of its divisors is an integer number (56443908843).

Almost surely, 2^213232544501 is an apocalyptic number.

It is an amenable number.

213232544501 is a deficient number, since it is larger than the sum of its proper divisors (12543090871).

213232544501 is a wasteful number, since it uses less digits than its factorization.

213232544501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543090870.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 213232544501 its reverse (105445232312), we get a palindrome (318677776813).

The spelling of 213232544501 in words is "two hundred thirteen billion, two hundred thirty-two million, five hundred forty-four thousand, five hundred one".