314121221 has 4 divisors (see below), whose sum is σ = 314156832. Its totient is φ = 314085612.

The previous prime is 314121217. The next prime is 314121239. The reversal of 314121221 is 122121413.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 314121221 - 2² = 314121217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 314121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (314121421) 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, 6350 + ... + 25856.

It is an arithmetic number, because the mean of its divisors is an integer number (78539208).

Almost surely, 2^314121221 is an apocalyptic number.

It is an amenable number.

314121221 is a deficient number, since it is larger than the sum of its proper divisors (35611).

314121221 is a wasteful number, since it uses less digits than its factorization.

314121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35610.

The product of its digits is 96, while the sum is 17.

The square root of 314121221 is about 17723.4652650095. The cubic root of 314121221 is about 679.7758928448.

Adding to 314121221 its reverse (122121413), we get a palindrome (436242634).

The spelling of 314121221 in words is "three hundred fourteen million, one hundred twenty-one thousand, two hundred twenty-one".