1321112032 has 12 divisors (see below), whose sum is σ = 2600939376. Its totient is φ = 660556000.

The previous prime is 1321112029. The next prime is 1321112033. The reversal of 1321112032 is 2302111231.

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

It is a junction number, because it is equal to n+sod(n) for n = 1321111997 and 1321112015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321112033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20642344 + ... + 20642407.

It is an arithmetic number, because the mean of its divisors is an integer number (216744948).

Almost surely, 2^1321112032 is an apocalyptic number.

It is an amenable number.

1321112032 is a deficient number, since it is larger than the sum of its proper divisors (1279827344).

1321112032 is an equidigital number, since it uses as much as digits as its factorization.

1321112032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41284761 (or 41284753 counting only the distinct ones).

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

The square root of 1321112032 is about 36347.1048640741. The cubic root of 1321112032 is about 1097.2692684878.

Adding to 1321112032 its reverse (2302111231), we get a palindrome (3623223263).

The spelling of 1321112032 in words is "one billion, three hundred twenty-one million, one hundred twelve thousand, thirty-two".