221484683 has 4 divisors (see below), whose sum is σ = 253125360. Its totient is φ = 189844008.

The previous prime is 221484671. The next prime is 221484689. The reversal of 221484683 is 386484122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221484683 - 2⁴ = 221484667 is a prime.

It is a super-2 number, since 2×221484683² = 98110929607220978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221484689) 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, 15820328 + ... + 15820341.

It is an arithmetic number, because the mean of its divisors is an integer number (63281340).

Almost surely, 2^221484683 is an apocalyptic number.

221484683 is a deficient number, since it is larger than the sum of its proper divisors (31640677).

221484683 is an equidigital number, since it uses as much as digits as its factorization.

221484683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31640676.

The product of its digits is 73728, while the sum is 38.

The square root of 221484683 is about 14882.3614725621. The cubic root of 221484683 is about 605.0360227168.

The spelling of 221484683 in words is "two hundred twenty-one million, four hundred eighty-four thousand, six hundred eighty-three".