221020314 has 16 divisors (see below), whose sum is σ = 453988128. Its totient is φ = 71682192.

The previous prime is 221020279. The next prime is 221020321. The reversal of 221020314 is 413020122.

It is a junction number, because it is equal to n+sod(n) for n = 221020293 and 221020302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497572 + ... + 498015.

It is an arithmetic number, because the mean of its divisors is an integer number (28374258).

Almost surely, 2^221020314 is an apocalyptic number.

221020314 is an abundant number, since it is smaller than the sum of its proper divisors (232967814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221020314 is a wasteful number, since it uses less digits than its factorization.

221020314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995629.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221020314 is about 14866.7519653756. The cubic root of 221020314 is about 604.6128835131.

Adding to 221020314 its reverse (413020122), we get a palindrome (634040436).

The spelling of 221020314 in words is "two hundred twenty-one million, twenty thousand, three hundred fourteen".