213032221187 has 2 divisors, whose sum is σ = 213032221188. Its totient is φ = 213032221186.

The previous prime is 213032221183. The next prime is 213032221219. The reversal of 213032221187 is 781122230312.

213032221187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (213032221219) can be obtained adding 213032221187 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213032221187 - 2² = 213032221183 is a prime.

It is not a weakly prime, because it can be changed into another prime (213032221183) 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 as a sum of consecutive naturals, namely, 106516110593 + 106516110594.

It is an arithmetic number, because the mean of its divisors is an integer number (106516110594).

Almost surely, 2^213032221187 is an apocalyptic number.

213032221187 is a deficient number, since it is larger than the sum of its proper divisors (1).

213032221187 is an equidigital number, since it uses as much as digits as its factorization.

213032221187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 213032221187 its reverse (781122230312), we get a palindrome (994154451499).

The spelling of 213032221187 in words is "two hundred thirteen billion, thirty-two million, two hundred twenty-one thousand, one hundred eighty-seven".