82020201 has 4 divisors (see below), whose sum is σ = 109360272. Its totient is φ = 54680132.

The previous prime is 82020187. The next prime is 82020209. The reversal of 82020201 is 10202028.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82020201 - 2⁶ = 82020137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82020209) 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, 13670031 + ... + 13670036.

It is an arithmetic number, because the mean of its divisors is an integer number (27340068).

Almost surely, 2^82020201 is an apocalyptic number.

It is an amenable number.

82020201 is a deficient number, since it is larger than the sum of its proper divisors (27340071).

82020201 is a wasteful number, since it uses less digits than its factorization.

82020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27340070.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 82020201 is about 9056.5004830784. The cubic root of 82020201 is about 434.4838216112.

Adding to 82020201 its reverse (10202028), we get a palindrome (92222229).

The spelling of 82020201 in words is "eighty-two million, twenty thousand, two hundred one".