10321121213 has 4 divisors (see below), whose sum is σ = 11115053628. Its totient is φ = 9527188800.

The previous prime is 10321121201. The next prime is 10321121221. The reversal of 10321121213 is 31212112301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5401221049 + 4919900164 = 73493^2 + 70142^2 .

It is a cyclic number.

It is not a de Polignac number, because 10321121213 - 2⁶ = 10321121149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10321121191 and 10321121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10321121513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396966188 + ... + 396966213.

It is an arithmetic number, because the mean of its divisors is an integer number (2778763407).

Almost surely, 2^10321121213 is an apocalyptic number.

10321121213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

10321121213 is a deficient number, since it is larger than the sum of its proper divisors (793932415).

10321121213 is an equidigital number, since it uses as much as digits as its factorization.

10321121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793932414.

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

Adding to 10321121213 its reverse (31212112301), we get a palindrome (41533233514).

The spelling of 10321121213 in words is "ten billion, three hundred twenty-one million, one hundred twenty-one thousand, two hundred thirteen".