213210503045221 has 12 divisors (see below), whose sum is σ = 234765776076832. Its totient is φ = 193488276861000.

The previous prime is 213210503045179. The next prime is 213210503045249. The reversal of 213210503045221 is 122540305012312.

It is a happy number.

It is not a de Polignac number, because 213210503045221 - 2⁹ = 213210503044709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213210503040221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1542899625 + ... + 1543037806.

Almost surely, 2^{213210503045221} is an apocalyptic number.

It is an amenable number.

213210503045221 is a deficient number, since it is larger than the sum of its proper divisors (21555273031611).

213210503045221 is a wasteful number, since it uses less digits than its factorization.

213210503045221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085938024 (or 3085938013 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 213210503045221 its reverse (122540305012312), we get a palindrome (335750808057533).

The spelling of 213210503045221 in words is "two hundred thirteen trillion, two hundred ten billion, five hundred three million, forty-five thousand, two hundred twenty-one".