213013013112221 has 16 divisors (see below), whose sum is σ = 248419211328000. Its totient is φ = 182577045009744.

The previous prime is 213013013112131. The next prime is 213013013112233. The reversal of 213013013112221 is 122211310310312.

It is a happy number.

It is not a de Polignac number, because 213013013112221 - 2¹⁴ = 213013013095837 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 (213013013118221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1927676 + ... + 20730218.

It is an arithmetic number, because the mean of its divisors is an integer number (15526200708000).

Almost surely, 2^{213013013112221} is an apocalyptic number.

It is an amenable number.

213013013112221 is a deficient number, since it is larger than the sum of its proper divisors (35406198215779).

213013013112221 is an equidigital number, since it uses as much as digits as its factorization.

213013013112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18835593 (or 18835579 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 213013013112221 its reverse (122211310310312), we get a palindrome (335224323422533).

The spelling of 213013013112221 in words is "two hundred thirteen trillion, thirteen billion, thirteen million, one hundred twelve thousand, two hundred twenty-one".