1321302112 has 48 divisors (see below), whose sum is σ = 2804760000. Its totient is φ = 609103872.

The previous prime is 1321302083. The next prime is 1321302127. The reversal of 1321302112 is 2112031231.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 518313 + ... + 520855.

It is an arithmetic number, because the mean of its divisors is an integer number (58432500).

Almost surely, 2^1321302112 is an apocalyptic number.

It is an amenable number.

1321302112 is an abundant number, since it is smaller than the sum of its proper divisors (1483457888).

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

1321302112 is a wasteful number, since it uses less digits than its factorization.

1321302112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815 (or 3807 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1321302112 is about 36349.7195587531. The cubic root of 1321302112 is about 1097.3218905555.

Adding to 1321302112 its reverse (2112031231), we get a palindrome (3433333343).

The spelling of 1321302112 in words is "one billion, three hundred twenty-one million, three hundred two thousand, one hundred twelve".