213300131221 has 4 divisors (see below), whose sum is σ = 213756877152. Its totient is φ = 212843385292.

The previous prime is 213300131201. The next prime is 213300131237. The reversal of 213300131221 is 122131003312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213300131221 - 2¹⁷ = 213300000149 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 (213300131201) 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, 228372265 + ... + 228373198.

It is an arithmetic number, because the mean of its divisors is an integer number (53439219288).

Almost surely, 2^213300131221 is an apocalyptic number.

It is an amenable number.

213300131221 is a deficient number, since it is larger than the sum of its proper divisors (456745931).

213300131221 is an equidigital number, since it uses as much as digits as its factorization.

213300131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456745930.

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

Adding to 213300131221 its reverse (122131003312), we get a palindrome (335431134533).

The spelling of 213300131221 in words is "two hundred thirteen billion, three hundred million, one hundred thirty-one thousand, two hundred twenty-one".