213020012111 has 16 divisors (see below), whose sum is σ = 229973204160. Its totient is φ = 196709399040.

The previous prime is 213020012089. The next prime is 213020012123. The reversal of 213020012111 is 111210020312.

It is a cyclic number.

It is not a de Polignac number, because 213020012111 - 2⁶ = 213020012047 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 (213020012141) 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 15 ways as a sum of consecutive naturals, for example, 9241781 + ... + 9264801.

It is an arithmetic number, because the mean of its divisors is an integer number (14373325260).

Almost surely, 2^213020012111 is an apocalyptic number.

213020012111 is a deficient number, since it is larger than the sum of its proper divisors (16953192049).

213020012111 is a wasteful number, since it uses less digits than its factorization.

213020012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36946.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 213020012111 its reverse (111210020312), we get a palindrome (324230032423).

The spelling of 213020012111 in words is "two hundred thirteen billion, twenty million, twelve thousand, one hundred eleven".