1321201302 has 64 divisors (see below), whose sum is σ = 2782080000. Its totient is φ = 417841920.

The previous prime is 1321201279. The next prime is 1321201303. The reversal of 1321201302 is 2031021231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321201303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2647449 + ... + 2647947.

It is an arithmetic number, because the mean of its divisors is an integer number (43470000).

Almost surely, 2^1321201302 is an apocalyptic number.

1321201302 is an abundant number, since it is smaller than the sum of its proper divisors (1460878698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321201302 is a wasteful number, since it uses less digits than its factorization.

1321201302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1321201302 is about 36348.3328641081. The cubic root of 1321201302 is about 1097.2939827737.

Adding to 1321201302 its reverse (2031021231), we get a palindrome (3352222533).

The spelling of 1321201302 in words is "one billion, three hundred twenty-one million, two hundred one thousand, three hundred two".