211533450305 has 8 divisors (see below), whose sum is σ = 264876668352. Its totient is φ = 161869074928.

The previous prime is 211533450299. The next prime is 211533450377. The reversal of 211533450305 is 503054335112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211533450305 - 2¹² = 211533446209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919710539 + ... + 919710768.

It is an arithmetic number, because the mean of its divisors is an integer number (33109583544).

Almost surely, 2^211533450305 is an apocalyptic number.

It is an amenable number.

211533450305 is a deficient number, since it is larger than the sum of its proper divisors (53343218047).

211533450305 is a wasteful number, since it uses less digits than its factorization.

211533450305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839421335.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 211533450305 its reverse (503054335112), we get a palindrome (714587785417).

The spelling of 211533450305 in words is "two hundred eleven billion, five hundred thirty-three million, four hundred fifty thousand, three hundred five".