213000013213 has 4 divisors (see below), whose sum is σ = 229384629628. Its totient is φ = 196615396800.

The previous prime is 213000013211. The next prime is 213000013217. The reversal of 213000013213 is 312310000312.

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 93423756409 + 119576256804 = 305653^2 + 345798^2 .

It is a cyclic number.

It is not a de Polignac number, because 213000013213 - 2¹ = 213000013211 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 (213000013211) 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, 8192308188 + ... + 8192308213.

It is an arithmetic number, because the mean of its divisors is an integer number (57346157407).

Almost surely, 2^213000013213 is an apocalyptic number.

It is an amenable number.

213000013213 is a deficient number, since it is larger than the sum of its proper divisors (16384616415).

213000013213 is a wasteful number, since it uses less digits than its factorization.

213000013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16384616414.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 213000013213 its reverse (312310000312), we get a palindrome (525310013525).

The spelling of 213000013213 in words is "two hundred thirteen billion, thirteen thousand, two hundred thirteen".