10320121021 has 8 divisors (see below), whose sum is σ = 12045369600. Its totient is φ = 8657608848.

The previous prime is 10320120991. The next prime is 10320121037. The reversal of 10320121021 is 12012102301.

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

It is not a de Polignac number, because 10320121021 - 2⁹ = 10320120509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10320120992 and 10320121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10320121081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15683746 + ... + 15684403.

It is an arithmetic number, because the mean of its divisors is an integer number (1505671200).

Almost surely, 2^10320121021 is an apocalyptic number.

It is an amenable number.

10320121021 is a deficient number, since it is larger than the sum of its proper divisors (1725248579).

10320121021 is an equidigital number, since it uses as much as digits as its factorization.

10320121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31368203.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10320121021 its reverse (12012102301), we get a palindrome (22332223322).

The spelling of 10320121021 in words is "ten billion, three hundred twenty million, one hundred twenty-one thousand, twenty-one".