211240243330 has 8 divisors (see below), whose sum is σ = 380232438012. Its totient is φ = 84496097328.

The previous prime is 211240243327. The next prime is 211240243363. The reversal of 211240243330 is 33342042112.

It can be written as a sum of positive squares in 2 ways, for example, as 184795954641 + 26444288689 = 429879^2 + 162617^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 211240243295 and 211240243304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10562012157 + ... + 10562012176.

Almost surely, 2^211240243330 is an apocalyptic number.

211240243330 is a deficient number, since it is larger than the sum of its proper divisors (168992194682).

211240243330 is a wasteful number, since it uses less digits than its factorization.

211240243330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21124024340.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 211240243330 its reverse (33342042112), we get a palindrome (244582285442).

The spelling of 211240243330 in words is "two hundred eleven billion, two hundred forty million, two hundred forty-three thousand, three hundred thirty".