20130021213 has 16 divisors (see below), whose sum is σ = 28228594176. Its totient is φ = 12742067520.

The previous prime is 20130021187. The next prime is 20130021217. The reversal of 20130021213 is 31212003102.

It is not a de Polignac number, because 20130021213 - 2²⁰ = 20128972637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20130021192 and 20130021201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130021217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2037070 + ... + 2046927.

It is an arithmetic number, because the mean of its divisors is an integer number (1764287136).

Almost surely, 2^20130021213 is an apocalyptic number.

It is an amenable number.

20130021213 is a deficient number, since it is larger than the sum of its proper divisors (8098572963).

20130021213 is a wasteful number, since it uses less digits than its factorization.

20130021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084084.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20130021213 its reverse (31212003102), we get a palindrome (51342024315).

The spelling of 20130021213 in words is "twenty billion, one hundred thirty million, twenty-one thousand, two hundred thirteen".