10121321321 has 8 divisors (see below), whose sum is σ = 10297636800. Its totient is φ = 9945164880.

The previous prime is 10121321311. The next prime is 10121321389. The reversal of 10121321321 is 12312312101.

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

It is a cyclic number.

It is not a de Polignac number, because 10121321321 - 2⁶ = 10121321257 is a prime.

It is a super-2 number, since 2×10121321321² (a number of 21 digits) contains 22 as substring.

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 10121321321.

It is not an unprimeable number, because it can be changed into a prime (10121321311) 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, 92420 + ... + 169658.

It is an arithmetic number, because the mean of its divisors is an integer number (1287204600).

Almost surely, 2^10121321321 is an apocalyptic number.

It is an amenable number.

10121321321 is a deficient number, since it is larger than the sum of its proper divisors (176315479).

10121321321 is an equidigital number, since it uses as much as digits as its factorization.

10121321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79519.

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

Adding to 10121321321 its reverse (12312312101), we get a palindrome (22433633422).

The spelling of 10121321321 in words is "ten billion, one hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-one".