221484682 has 4 divisors (see below), whose sum is σ = 332227026. Its totient is φ = 110742340.

The previous prime is 221484671. The next prime is 221484689. The reversal of 221484682 is 286484122.

221484682 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 286484122 = 2 ⋅143242061.

It can be written as a sum of positive squares in only one way, i.e., 215179561 + 6305121 = 14669^2 + 2511^2 .

It is a super-2 number, since 2×221484682² = 98110928721282248, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 55371169 + ... + 55371172.

Almost surely, 2^221484682 is an apocalyptic number.

221484682 is a deficient number, since it is larger than the sum of its proper divisors (110742344).

221484682 is a wasteful number, since it uses less digits than its factorization.

221484682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110742343.

The product of its digits is 49152, while the sum is 37.

The square root of 221484682 is about 14882.3614389653. The cubic root of 221484682 is about 605.0360218062.

The spelling of 221484682 in words is "two hundred twenty-one million, four hundred eighty-four thousand, six hundred eighty-two".