211240011 has 16 divisors (see below), whose sum is σ = 303114528. Its totient is φ = 130368000.

The previous prime is 211239997. The next prime is 211240021. The reversal of 211240011 is 110042112.

It is a happy number.

It is not a de Polignac number, because 211240011 - 2¹¹ = 211237963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211240021) 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 15 ways as a sum of consecutive naturals, for example, 30840 + ... + 37061.

It is an arithmetic number, because the mean of its divisors is an integer number (18944658).

Almost surely, 2^211240011 is an apocalyptic number.

211240011 is a deficient number, since it is larger than the sum of its proper divisors (91874517).

211240011 is a wasteful number, since it uses less digits than its factorization.

211240011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67982.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 211240011 is about 14534.0982176398. The cubic root of 211240011 is about 595.5598252457.

Adding to 211240011 its reverse (110042112), we get a palindrome (321282123).

The spelling of 211240011 in words is "two hundred eleven million, two hundred forty thousand, eleven".