1314212221 has 16 divisors (see below), whose sum is σ = 1538828928. Its totient is φ = 1099051200.

The previous prime is 1314212219. The next prime is 1314212231. The reversal of 1314212221 is 1222124131.

It is a cyclic number.

It is not a de Polignac number, because 1314212221 - 2¹ = 1314212219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1314212231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57366 + ... + 76936.

It is an arithmetic number, because the mean of its divisors is an integer number (96176808).

Almost surely, 2^1314212221 is an apocalyptic number.

It is an amenable number.

1314212221 is a deficient number, since it is larger than the sum of its proper divisors (224616707).

1314212221 is a wasteful number, since it uses less digits than its factorization.

1314212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19812.

The product of its digits is 192, while the sum is 19.

The square root of 1314212221 is about 36252.0650584212. The cubic root of 1314212221 is about 1095.3556863175.

Adding to 1314212221 its reverse (1222124131), we get a palindrome (2536336352).

The spelling of 1314212221 in words is "one billion, three hundred fourteen million, two hundred twelve thousand, two hundred twenty-one".