211125334445 has 4 divisors (see below), whose sum is σ = 253350401340. Its totient is φ = 168900267552.

The previous prime is 211125334439. The next prime is 211125334447. The reversal of 211125334445 is 544433521112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 155657077156 + 55468257289 = 394534^2 + 235517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211125334445 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211125334447) 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 3 ways as a sum of consecutive naturals, for example, 21112533440 + ... + 21112533449.

It is an arithmetic number, because the mean of its divisors is an integer number (63337600335).

Almost surely, 2^211125334445 is an apocalyptic number.

It is an amenable number.

211125334445 is a deficient number, since it is larger than the sum of its proper divisors (42225066895).

211125334445 is an equidigital number, since it uses as much as digits as its factorization.

211125334445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42225066894.

The product of its digits is 57600, while the sum is 35.

Adding to 211125334445 its reverse (544433521112), we get a palindrome (755558855557).

The spelling of 211125334445 in words is "two hundred eleven billion, one hundred twenty-five million, three hundred thirty-four thousand, four hundred forty-five".