213012300221 has 16 divisors (see below), whose sum is σ = 247115612160. Its totient is φ = 179828106480.

The previous prime is 213012300209. The next prime is 213012300251. The reversal of 213012300221 is 122003210312.

It is a cyclic number.

It is not a de Polignac number, because 213012300221 - 2¹⁰ = 213012299197 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 213012300221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213012300251) 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, 3208400 + ... + 3274118.

It is an arithmetic number, because the mean of its divisors is an integer number (15444725760).

Almost surely, 2^213012300221 is an apocalyptic number.

It is an amenable number.

213012300221 is a deficient number, since it is larger than the sum of its proper divisors (34103311939).

213012300221 is an equidigital number, since it uses as much as digits as its factorization.

213012300221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72704.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213012300221 its reverse (122003210312), we get a palindrome (335015510533).

The spelling of 213012300221 in words is "two hundred thirteen billion, twelve million, three hundred thousand, two hundred twenty-one".