213424301221 has 8 divisors (see below), whose sum is σ = 224672054400. Its totient is φ = 202178037600.

The previous prime is 213424301197. The next prime is 213424301231. The reversal of 213424301221 is 122103424312.

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 213424301221 - 2¹⁷ = 213424170149 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 (213424301231) 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, 72061 + ... + 657298.

It is an arithmetic number, because the mean of its divisors is an integer number (28084006800).

Almost surely, 2^213424301221 is an apocalyptic number.

It is an amenable number.

213424301221 is a deficient number, since it is larger than the sum of its proper divisors (11247753179).

213424301221 is a wasteful number, since it uses less digits than its factorization.

213424301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744779.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 213424301221 its reverse (122103424312), we get a palindrome (335527725533).

The spelling of 213424301221 in words is "two hundred thirteen billion, four hundred twenty-four million, three hundred one thousand, two hundred twenty-one".