20121313213 has 8 divisors (see below), whose sum is σ = 20465121600. Its totient is φ = 19777597248.

The previous prime is 20121313181. The next prime is 20121313297. The reversal of 20121313213 is 31231312102.

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 20121313213 - 2⁵ = 20121313181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121313013) 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 7 ways as a sum of consecutive naturals, for example, 526645 + ... + 563557.

It is an arithmetic number, because the mean of its divisors is an integer number (2558140200).

Almost surely, 2^20121313213 is an apocalyptic number.

It is an amenable number.

20121313213 is a deficient number, since it is larger than the sum of its proper divisors (343808387).

20121313213 is an equidigital number, since it uses as much as digits as its factorization.

20121313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46211.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20121313213 its reverse (31231312102), we get a palindrome (51352625315).

The spelling of 20121313213 in words is "twenty billion, one hundred twenty-one million, three hundred thirteen thousand, two hundred thirteen".