20130011213 has 4 divisors (see below), whose sum is σ = 21678473628. Its totient is φ = 18581548800.

The previous prime is 20130011207. The next prime is 20130011257. The reversal of 20130011213 is 31211003102.

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 10061494249 + 10068516964 = 100307^2 + 100342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20130011213 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 (20130011273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774231188 + ... + 774231213.

It is an arithmetic number, because the mean of its divisors is an integer number (5419618407).

Almost surely, 2^20130011213 is an apocalyptic number.

It is an amenable number.

20130011213 is a deficient number, since it is larger than the sum of its proper divisors (1548462415).

20130011213 is a wasteful number, since it uses less digits than its factorization.

20130011213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548462414.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20130011213 its reverse (31211003102), we get a palindrome (51341014315).

The spelling of 20130011213 in words is "twenty billion, one hundred thirty million, eleven thousand, two hundred thirteen".