221543223200213 has 4 divisors (see below), whose sum is σ = 221543253101568. Its totient is φ = 221543193298860.

The previous prime is 221543223200203. The next prime is 221543223200237. The reversal of 221543223200213 is 312002322345122.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 221543223200213 - 2¹⁰ = 221543223199189 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 221543223200213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221543223200203) 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, 5364908 + ... + 21722538.

It is an arithmetic number, because the mean of its divisors is an integer number (55385813275392).

Almost surely, 2^{221543223200213} is an apocalyptic number.

It is an amenable number.

221543223200213 is a deficient number, since it is larger than the sum of its proper divisors (29901355).

221543223200213 is a wasteful number, since it uses less digits than its factorization.

221543223200213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29901354.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 221543223200213 its reverse (312002322345122), we get a palindrome (533545545545335).

The spelling of 221543223200213 in words is "two hundred twenty-one trillion, five hundred forty-three billion, two hundred twenty-three million, two hundred thousand, two hundred thirteen".