83222921 has 6 divisors (see below), whose sum is σ = 84245130. Its totient is φ = 82202736.

The previous prime is 83222903. The next prime is 83222957. The reversal of 83222921 is 12922238.

It can be written as a sum of positive squares in only one way, i.e., 59845696 + 23377225 = 7736^2 + 4835^2 .

It is not a de Polignac number, because 83222921 - 2⁶ = 83222857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83221921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85580 + ... + 86546.

It is an arithmetic number, because the mean of its divisors is an integer number (14040855).

Almost surely, 2^83222921 is an apocalyptic number.

It is an amenable number.

83222921 is a deficient number, since it is larger than the sum of its proper divisors (1022209).

83222921 is an frugal number, since it uses more digits than its factorization.

83222921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023 (or 1056 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 83222921 is about 9122.6597546987. The cubic root of 83222921 is about 436.5972389927.

The spelling of 83222921 in words is "eighty-three million, two hundred twenty-two thousand, nine hundred twenty-one".