83221001 has 8 divisors (see below), whose sum is σ = 88231680. Its totient is φ = 78223168.

The previous prime is 83220983. The next prime is 83221003. The reversal of 83221001 is 10012238.

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

It is a cyclic number.

It is not a de Polignac number, because 83221001 - 2¹⁸ = 82958857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83221003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12320 + ... + 17838.

It is an arithmetic number, because the mean of its divisors is an integer number (11028960).

Almost surely, 2^83221001 is an apocalyptic number.

It is an amenable number.

83221001 is a deficient number, since it is larger than the sum of its proper divisors (5010679).

83221001 is a wasteful number, since it uses less digits than its factorization.

83221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 83221001 is about 9122.5545216239. The cubic root of 83221001 is about 436.5938814516.

Adding to 83221001 its reverse (10012238), we get a palindrome (93233239).

The spelling of 83221001 in words is "eighty-three million, two hundred twenty-one thousand, one".