814301221 has 4 divisors (see below), whose sum is σ = 857159200. Its totient is φ = 771443244.

The previous prime is 814301209. The next prime is 814301227. The reversal of 814301221 is 122103418.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 814301221 - 2⁷ = 814301093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 814301192 and 814301201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814301227) 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, 21428961 + ... + 21428998.

It is an arithmetic number, because the mean of its divisors is an integer number (214289800).

Almost surely, 2^814301221 is an apocalyptic number.

It is an amenable number.

814301221 is a deficient number, since it is larger than the sum of its proper divisors (42857979).

814301221 is a wasteful number, since it uses less digits than its factorization.

814301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42857978.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 814301221 is about 28535.9636423934. The cubic root of 814301221 is about 933.8168266901.

Adding to 814301221 its reverse (122103418), we get a palindrome (936404639).

The spelling of 814301221 in words is "eight hundred fourteen million, three hundred one thousand, two hundred twenty-one".