213230113021 has 8 divisors (see below), whose sum is σ = 215665659000. Its totient is φ = 210803281920.

The previous prime is 213230112967. The next prime is 213230113037. The reversal of 213230113021 is 120311032312.

It can be written as a sum of positive squares in 4 ways, for example, as 8554400100 + 204675712921 = 92490^2 + 452411^2 .

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 213230113021 - 2²³ = 213221724413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213230113021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213230113121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2129500 + ... + 2227381.

It is an arithmetic number, because the mean of its divisors is an integer number (26958207375).

Almost surely, 2^213230113021 is an apocalyptic number.

It is an amenable number.

213230113021 is a deficient number, since it is larger than the sum of its proper divisors (2435545979).

213230113021 is a wasteful number, since it uses less digits than its factorization.

213230113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357439.

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

Adding to 213230113021 its reverse (120311032312), we get a palindrome (333541145333).

The spelling of 213230113021 in words is "two hundred thirteen billion, two hundred thirty million, one hundred thirteen thousand, twenty-one".