211240213124 has 12 divisors (see below), whose sum is σ = 369681609948. Its totient is φ = 105616896000.

The previous prime is 211240213123. The next prime is 211240213153. The reversal of 211240213124 is 421312042112.

211240213124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 63847182400 + 147393030724 = 252680^2 + 383918^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211240213124.

It is not an unprimeable number, because it can be changed into a prime (211240213123) 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 in 3 ways as a sum of consecutive naturals, for example, 651437 + ... + 920244.

It is an arithmetic number, because the mean of its divisors is an integer number (30806800829).

Almost surely, 2^211240213124 is an apocalyptic number.

It is an amenable number.

211240213124 is a deficient number, since it is larger than the sum of its proper divisors (158441396824).

211240213124 is a wasteful number, since it uses less digits than its factorization.

211240213124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605286 (or 1605284 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 211240213124 its reverse (421312042112), we get a palindrome (632552255236).

The spelling of 211240213124 in words is "two hundred eleven billion, two hundred forty million, two hundred thirteen thousand, one hundred twenty-four".