211155012241 has 8 divisors (see below), whose sum is σ = 223585173504. Its totient is φ = 198725881920.

The previous prime is 211155012227. The next prime is 211155012269. The reversal of 211155012241 is 142210551112.

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

It is not a de Polignac number, because 211155012241 - 2⁷ = 211155012113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211155015241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185776 + ... + 675886.

It is an arithmetic number, because the mean of its divisors is an integer number (27948146688).

Almost surely, 2^211155012241 is an apocalyptic number.

It is an amenable number.

211155012241 is a deficient number, since it is larger than the sum of its proper divisors (12430161263).

211155012241 is a wasteful number, since it uses less digits than its factorization.

211155012241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515471.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 211155012241 its reverse (142210551112), we get a palindrome (353365563353).

The spelling of 211155012241 in words is "two hundred eleven billion, one hundred fifty-five million, twelve thousand, two hundred forty-one".