102231020321 has 8 divisors (see below), whose sum is σ = 103177546560. Its totient is φ = 101284651152.

The previous prime is 102231020303. The next prime is 102231020363. The reversal of 102231020321 is 123020132201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102231020321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102231020321.

It is not an unprimeable number, because it can be changed into a prime (102231020621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572956 + ... + 1636658.

It is an arithmetic number, because the mean of its divisors is an integer number (12897193320).

Almost surely, 2^102231020321 is an apocalyptic number.

It is an amenable number.

102231020321 is a deficient number, since it is larger than the sum of its proper divisors (946526239).

102231020321 is a wasteful number, since it uses less digits than its factorization.

102231020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78535.

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

Adding to 102231020321 its reverse (123020132201), we get a palindrome (225251152522).

The spelling of 102231020321 in words is "one hundred two billion, two hundred thirty-one million, twenty thousand, three hundred twenty-one".