211243013224 has 8 divisors (see below), whose sum is σ = 396080649810. Its totient is φ = 105621506608.

The previous prime is 211243013171. The next prime is 211243013227. The reversal of 211243013224 is 422310342112.

It can be written as a sum of positive squares in only one way, i.e., 210297450724 + 945562500 = 458582^2 + 30750^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×211243013224² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211243013227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13202688319 + ... + 13202688334.

Almost surely, 2^211243013224 is an apocalyptic number.

It is an amenable number.

211243013224 is a deficient number, since it is larger than the sum of its proper divisors (184837636586).

211243013224 is a wasteful number, since it uses less digits than its factorization.

211243013224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26405376659 (or 26405376655 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211243013224 its reverse (422310342112), we get a palindrome (633553355336).

The spelling of 211243013224 in words is "two hundred eleven billion, two hundred forty-three million, thirteen thousand, two hundred twenty-four".