1201032321 has 8 divisors (see below), whose sum is σ = 1644657024. Its totient is φ = 779047920.

The previous prime is 1201032319. The next prime is 1201032323. The reversal of 1201032321 is 1232301021.

It is an interprime number because it is at equal distance from previous prime (1201032319) and next prime (1201032323).

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

It is not a de Polignac number, because 1201032321 - 2¹ = 1201032319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201032321.

It is not an unprimeable number, because it can be changed into a prime (1201032323) by changing a digit.

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, 5409945 + ... + 5410166.

It is an arithmetic number, because the mean of its divisors is an integer number (205582128).

Almost surely, 2^1201032321 is an apocalyptic number.

It is an amenable number.

1201032321 is a deficient number, since it is larger than the sum of its proper divisors (443624703).

1201032321 is a wasteful number, since it uses less digits than its factorization.

1201032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10820151.

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

The square root of 1201032321 is about 34655.9132183817. The cubic root of 1201032321 is about 1062.9632053867.

Adding to 1201032321 its reverse (1232301021), we get a palindrome (2433333342).

The spelling of 1201032321 in words is "one billion, two hundred one million, thirty-two thousand, three hundred twenty-one".