10203210320321 has 4 divisors (see below), whose sum is σ = 10203248144832. Its totient is φ = 10203172495812.

The previous prime is 10203210320263. The next prime is 10203210320351. The reversal of 10203210320321 is 12302301230201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10203210320321 - 2⁴² = 5805163809217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10203210320293 and 10203210320302.

It is not an unprimeable number, because it can be changed into a prime (10203210320351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18504701 + ... + 19048106.

It is an arithmetic number, because the mean of its divisors is an integer number (2550812036208).

Almost surely, 2^{10203210320321} is an apocalyptic number.

It is an amenable number.

10203210320321 is a deficient number, since it is larger than the sum of its proper divisors (37824511).

10203210320321 is an equidigital number, since it uses as much as digits as its factorization.

10203210320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37824510.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 10203210320321 its reverse (12302301230201), we get a palindrome (22505511550522).

The spelling of 10203210320321 in words is "ten trillion, two hundred three billion, two hundred ten million, three hundred twenty thousand, three hundred twenty-one".