221289514 has 8 divisors (see below), whose sum is σ = 333768708. Its totient is φ = 110033280.

The previous prime is 221289503. The next prime is 221289521. The reversal of 221289514 is 415982122.

It can be written as a sum of positive squares in 2 ways, for example, as 162996289 + 58293225 = 12767^2 + 7635^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 221289514.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305287 + ... + 306010.

Almost surely, 2^221289514 is an apocalyptic number.

221289514 is a deficient number, since it is larger than the sum of its proper divisors (112479194).

221289514 is a wasteful number, since it uses less digits than its factorization.

221289514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611480.

The product of its digits is 11520, while the sum is 34.

The square root of 221289514 is about 14875.8029699240. The cubic root of 221289514 is about 604.8582542505.

The spelling of 221289514 in words is "two hundred twenty-one million, two hundred eighty-nine thousand, five hundred fourteen".