10231323320221 has 4 divisors (see below), whose sum is σ = 10240385609500. Its totient is φ = 10222261030944.

The previous prime is 10231323320203. The next prime is 10231323320237. The reversal of 10231323320221 is 12202332313201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1399216923225 + 8832106396996 = 1182885^2 + 2971886^2 .

It is a cyclic number.

It is not a de Polignac number, because 10231323320221 - 2¹³ = 10231323312029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10231323320521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4531142946 + ... + 4531145203.

It is an arithmetic number, because the mean of its divisors is an integer number (2560096402375).

Almost surely, 2^{10231323320221} is an apocalyptic number.

It is an amenable number.

10231323320221 is a deficient number, since it is larger than the sum of its proper divisors (9062289279).

10231323320221 is an equidigital number, since it uses as much as digits as its factorization.

10231323320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9062289278.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 10231323320221 its reverse (12202332313201), we get a palindrome (22433655633422).

The spelling of 10231323320221 in words is "ten trillion, two hundred thirty-one billion, three hundred twenty-three million, three hundred twenty thousand, two hundred twenty-one".