213113222111 has 8 divisors (see below), whose sum is σ = 216055266240. Its totient is φ = 210171791232.

The previous prime is 213113222093. The next prime is 213113222131. The reversal of 213113222111 is 111222311312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213113222111 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 (213113222131) 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 7 ways as a sum of consecutive naturals, for example, 569891 + ... + 866603.

It is an arithmetic number, because the mean of its divisors is an integer number (27006908280).

Almost surely, 2^213113222111 is an apocalyptic number.

213113222111 is a deficient number, since it is larger than the sum of its proper divisors (2942044129).

213113222111 is an equidigital number, since it uses as much as digits as its factorization.

213113222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306625.

The product of its digits is 144, while the sum is 20.

Adding to 213113222111 its reverse (111222311312), we get a palindrome (324335533423).

The spelling of 213113222111 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred twenty-two thousand, one hundred eleven".