213221310220221 has 8 divisors (see below), whose sum is σ = 284295488005344. Its totient is φ = 142147336290960.

The previous prime is 213221310220181. The next prime is 213221310220231. The reversal of 213221310220221 is 122022013122312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213221310220221 - 2¹⁸ = 213221309958077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213221310220191 and 213221310220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213221310220231) 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, 48506506 + ... + 52719291.

It is an arithmetic number, because the mean of its divisors is an integer number (35536936000668).

Almost surely, 2^{213221310220221} is an apocalyptic number.

It is an amenable number.

213221310220221 is a deficient number, since it is larger than the sum of its proper divisors (71074177785123).

213221310220221 is a wasteful number, since it uses less digits than its factorization.

213221310220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101927931.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 213221310220221 its reverse (122022013122312), we get a palindrome (335243323342533).

The spelling of 213221310220221 in words is "two hundred thirteen trillion, two hundred twenty-one billion, three hundred ten million, two hundred twenty thousand, two hundred twenty-one".