213223120111 has 4 divisors (see below), whose sum is σ = 214033854672. Its totient is φ = 212412385552.

The previous prime is 213223120087. The next prime is 213223120129. The reversal of 213223120111 is 111021322312.

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 213223120111 - 2⁷ = 213223119983 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 (213223120181) 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, 405366886 + ... + 405367411.

It is an arithmetic number, because the mean of its divisors is an integer number (53508463668).

Almost surely, 2^213223120111 is an apocalyptic number.

213223120111 is a deficient number, since it is larger than the sum of its proper divisors (810734561).

213223120111 is an equidigital number, since it uses as much as digits as its factorization.

213223120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810734560.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 213223120111 its reverse (111021322312), we get a palindrome (324244442423).

The spelling of 213223120111 in words is "two hundred thirteen billion, two hundred twenty-three million, one hundred twenty thousand, one hundred eleven".