213211187273 has 4 divisors (see below), whose sum is σ = 243669928320. Its totient is φ = 182752446228.

The previous prime is 213211187263. The next prime is 213211187297. The reversal of 213211187273 is 372781112312.

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 213211187273 - 2⁴ = 213211187257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213211187263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15229370513 + ... + 15229370526.

It is an arithmetic number, because the mean of its divisors is an integer number (60917482080).

Almost surely, 2^213211187273 is an apocalyptic number.

It is an amenable number.

213211187273 is a deficient number, since it is larger than the sum of its proper divisors (30458741047).

213211187273 is an equidigital number, since it uses as much as digits as its factorization.

213211187273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30458741046.

The product of its digits is 28224, while the sum is 38.

Adding to 213211187273 its reverse (372781112312), we get a palindrome (585992299585).

The spelling of 213211187273 in words is "two hundred thirteen billion, two hundred eleven million, one hundred eighty-seven thousand, two hundred seventy-three".