221974283 has 16 divisors (see below), whose sum is σ = 239185920. Its totient is φ = 205371936.

The previous prime is 221974273. The next prime is 221974289. The reversal of 221974283 is 382479122.

It is a cyclic number.

It is not a de Polignac number, because 221974283 - 2⁴ = 221974267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221974289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160985 + ... + 162357.

It is an arithmetic number, because the mean of its divisors is an integer number (14949120).

Almost surely, 2^221974283 is an apocalyptic number.

221974283 is a deficient number, since it is larger than the sum of its proper divisors (17211637).

221974283 is a wasteful number, since it uses less digits than its factorization.

221974283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586.

The product of its digits is 48384, while the sum is 38.

The square root of 221974283 is about 14898.8013947431. The cubic root of 221974283 is about 605.4815127131.

The spelling of 221974283 in words is "two hundred twenty-one million, nine hundred seventy-four thousand, two hundred eighty-three".