82022201 has 4 divisors (see below), whose sum is σ = 82834404. Its totient is φ = 81210000.

The previous prime is 82022147. The next prime is 82022203. The reversal of 82022201 is 10222028.

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 63186601 + 18835600 = 7949^2 + 4340^2 .

It is a cyclic number.

It is not a de Polignac number, because 82022201 - 2¹⁴ = 82005817 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 82022201.

It is not an unprimeable number, because it can be changed into a prime (82022203) 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, 405950 + ... + 406151.

It is an arithmetic number, because the mean of its divisors is an integer number (20708601).

Almost surely, 2^82022201 is an apocalyptic number.

It is an amenable number.

82022201 is a deficient number, since it is larger than the sum of its proper divisors (812203).

82022201 is a wasteful number, since it uses less digits than its factorization.

82022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812202.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 82022201 is about 9056.6109003313. The cubic root of 82022201 is about 434.4873531013.

Adding to 82022201 its reverse (10222028), we get a palindrome (92244229).

The spelling of 82022201 in words is "eighty-two million, twenty-two thousand, two hundred one".