82127211 has 4 divisors (see below), whose sum is σ = 109502952. Its totient is φ = 54751472.

The previous prime is 82127209. The next prime is 82127219. The reversal of 82127211 is 11272128.

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

It is a cyclic number.

It is not a de Polignac number, because 82127211 - 2¹ = 82127209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82127219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13687866 + ... + 13687871.

It is an arithmetic number, because the mean of its divisors is an integer number (27375738).

Almost surely, 2^82127211 is an apocalyptic number.

82127211 is a deficient number, since it is larger than the sum of its proper divisors (27375741).

82127211 is a wasteful number, since it uses less digits than its factorization.

82127211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27375740.

The product of its digits is 448, while the sum is 24.

The square root of 82127211 is about 9062.4064684829. The cubic root of 82127211 is about 434.6726934090.

Adding to 82127211 its reverse (11272128), we get a palindrome (93399339).

The spelling of 82127211 in words is "eighty-two million, one hundred twenty-seven thousand, two hundred eleven".