83206221 has 8 divisors (see below), whose sum is σ = 126790464. Its totient is φ = 47546400.

The previous prime is 83206199. The next prime is 83206223. The reversal of 83206221 is 12260238.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83206221 - 2⁷ = 83206093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83206191 and 83206200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83206223) 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 7 ways as a sum of consecutive naturals, for example, 1981080 + ... + 1981121.

It is an arithmetic number, because the mean of its divisors is an integer number (15848808).

Almost surely, 2^83206221 is an apocalyptic number.

It is an amenable number.

83206221 is a deficient number, since it is larger than the sum of its proper divisors (43584243).

83206221 is a wasteful number, since it uses less digits than its factorization.

83206221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962211.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 83206221 is about 9121.7444055400. The cubic root of 83206221 is about 436.5680336506.

Adding to 83206221 its reverse (12260238), we get a palindrome (95466459).

It can be divided in two parts, 8320 and 6221, that added together give a palindrome (14541).

The spelling of 83206221 in words is "eighty-three million, two hundred six thousand, two hundred twenty-one".