211411601 has 4 divisors (see below), whose sum is σ = 211640100. Its totient is φ = 211183104.

The previous prime is 211411583. The next prime is 211411619. The reversal of 211411601 is 106114112.

It is a Cunningham number, because it is equal to 14540²+1.

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

It is an interprime number because it is at equal distance from previous prime (211411583) and next prime (211411619).

It can be written as a sum of positive squares in 2 ways, for example, as 4080400 + 207331201 = 2020^2 + 14399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211411601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211411601.

It is not an unprimeable number, because it can be changed into a prime (211411001) 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 3 ways as a sum of consecutive naturals, for example, 112856 + ... + 114713.

It is an arithmetic number, because the mean of its divisors is an integer number (52910025).

Almost surely, 2^211411601 is an apocalyptic number.

It is an amenable number.

211411601 is a deficient number, since it is larger than the sum of its proper divisors (228499).

211411601 is an equidigital number, since it uses as much as digits as its factorization.

211411601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228498.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 211411601 is about 14540.0000343879. Note that the first 4 decimals coincide. The cubic root of 211411601 is about 595.7210391058.

Adding to 211411601 its reverse (106114112), we get a palindrome (317525713).

The spelling of 211411601 in words is "two hundred eleven million, four hundred eleven thousand, six hundred one".