1214320221 has 16 divisors (see below), whose sum is σ = 1799680320. Its totient is φ = 809237520.

The previous prime is 1214320201. The next prime is 1214320223. The reversal of 1214320221 is 1220234121.

It is a happy number.

1214320221 is a `hidden beast` number, since 12 + 1 + 432 + 0 + 221 = 666.

It is not a de Polignac number, because 1214320221 - 2⁹ = 1214319709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1214320194 and 1214320203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214320223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79986 + ... + 93948.

It is an arithmetic number, because the mean of its divisors is an integer number (112480020).

Almost surely, 2^1214320221 is an apocalyptic number.

It is an amenable number.

1214320221 is a deficient number, since it is larger than the sum of its proper divisors (585360099).

1214320221 is a wasteful number, since it uses less digits than its factorization.

1214320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17193 (or 17187 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1214320221 is about 34847.0977414189. The cubic root of 1214320221 is about 1066.8689499936.

Adding to 1214320221 its reverse (1220234121), we get a palindrome (2434554342).

The spelling of 1214320221 in words is "one billion, two hundred fourteen million, three hundred twenty thousand, two hundred twenty-one".