1221302314 has 4 divisors (see below), whose sum is σ = 1831953474. Its totient is φ = 610651156.

The previous prime is 1221302281. The next prime is 1221302333. The reversal of 1221302314 is 4132031221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4132031221 = 421 ⋅9814801.

It can be written as a sum of positive squares in only one way, i.e., 901500625 + 319801689 = 30025^2 + 17883^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1221302291 and 1221302300.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 305325577 + ... + 305325580.

Almost surely, 2^1221302314 is an apocalyptic number.

1221302314 is a deficient number, since it is larger than the sum of its proper divisors (610651160).

1221302314 is an equidigital number, since it uses as much as digits as its factorization.

1221302314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610651159.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1221302314 is about 34947.1359913799. The cubic root of 1221302314 is about 1068.9098029276.

Adding to 1221302314 its reverse (4132031221), we get a palindrome (5353333535).

The spelling of 1221302314 in words is "one billion, two hundred twenty-one million, three hundred two thousand, three hundred fourteen".