213201221011 has 4 divisors (see below), whose sum is σ = 213722495800. Its totient is φ = 212679946224.

The previous prime is 213201220943. The next prime is 213201221041. The reversal of 213201221011 is 110122102312.

213201221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213201221011 - 2⁹ = 213201220499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213201221041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260636781 + ... + 260637598.

It is an arithmetic number, because the mean of its divisors is an integer number (53430623950).

Almost surely, 2^213201221011 is an apocalyptic number.

213201221011 is a deficient number, since it is larger than the sum of its proper divisors (521274789).

213201221011 is an equidigital number, since it uses as much as digits as its factorization.

213201221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521274788.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 213201221011 its reverse (110122102312), we get a palindrome (323323323323).

The spelling of 213201221011 in words is "two hundred thirteen billion, two hundred one million, two hundred twenty-one thousand, eleven".