1321221302 has 8 divisors (see below), whose sum is σ = 2045762112. Its totient is φ = 639300600.

The previous prime is 1321221289. The next prime is 1321221313. The reversal of 1321221302 is 2031221231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10654949 + ... + 10655072.

It is an arithmetic number, because the mean of its divisors is an integer number (255720264).

Almost surely, 2^1321221302 is an apocalyptic number.

1321221302 is a deficient number, since it is larger than the sum of its proper divisors (724540810).

1321221302 is a wasteful number, since it uses less digits than its factorization.

1321221302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21310054.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1321221302 is about 36348.6079788484. The cubic root of 1321221302 is about 1097.2995195956.

Adding to 1321221302 its reverse (2031221231), we get a palindrome (3352442533).

The spelling of 1321221302 in words is "one billion, three hundred twenty-one million, two hundred twenty-one thousand, three hundred two".