10231121321 has 4 divisors (see below), whose sum is σ = 10273929600. Its totient is φ = 10188313044.

The previous prime is 10231121309. The next prime is 10231121333. The reversal of 10231121321 is 12312113201.

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 an interprime number because it is at equal distance from previous prime (10231121309) and next prime (10231121333).

It is a cyclic number.

It is not a de Polignac number, because 10231121321 - 2¹⁰ = 10231120297 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 10231121321.

It is not an unprimeable number, because it can be changed into a prime (10231123321) 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, 21403781 + ... + 21404258.

It is an arithmetic number, because the mean of its divisors is an integer number (2568482400).

Almost surely, 2^10231121321 is an apocalyptic number.

It is an amenable number.

10231121321 is a deficient number, since it is larger than the sum of its proper divisors (42808279).

10231121321 is an equidigital number, since it uses as much as digits as its factorization.

10231121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42808278.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10231121321 its reverse (12312113201), we get a palindrome (22543234522).

The spelling of 10231121321 in words is "ten billion, two hundred thirty-one million, one hundred twenty-one thousand, three hundred twenty-one".