211043124449 has 2 divisors, whose sum is σ = 211043124450. Its totient is φ = 211043124448.

The previous prime is 211043124407. The next prime is 211043124503. The reversal of 211043124449 is 944421340112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140151399424 + 70891725025 = 374368^2 + 266255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211043124449 is a prime.

It is a super-2 number, since 2×211043124449² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211043124949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105521562224 + 105521562225.

It is an arithmetic number, because the mean of its divisors is an integer number (105521562225).

Almost surely, 2^211043124449 is an apocalyptic number.

It is an amenable number.

211043124449 is a deficient number, since it is larger than the sum of its proper divisors (1).

211043124449 is an equidigital number, since it uses as much as digits as its factorization.

211043124449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 211043124449 in words is "two hundred eleven billion, forty-three million, one hundred twenty-four thousand, four hundred forty-nine".