10121001321 has 8 divisors (see below), whose sum is σ = 13525835680. Its totient is φ = 6731750592.

The previous prime is 10121001313. The next prime is 10121001403. The reversal of 10121001321 is 12310012101.

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

It is not a de Polignac number, because 10121001321 - 2³ = 10121001313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121001297 and 10121001306.

It is not an unprimeable number, because it can be changed into a prime (10121000321) 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, 3894391 + ... + 3896988.

It is an arithmetic number, because the mean of its divisors is an integer number (1690729460).

Almost surely, 2^10121001321 is an apocalyptic number.

It is an amenable number.

10121001321 is a deficient number, since it is larger than the sum of its proper divisors (3404834359).

10121001321 is an equidigital number, since it uses as much as digits as its factorization.

10121001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7791815.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 10121001321 its reverse (12310012101), we get a palindrome (22431013422).

The spelling of 10121001321 in words is "ten billion, one hundred twenty-one million, one thousand, three hundred twenty-one".