213000021111 has 8 divisors (see below), whose sum is σ = 284002439040. Its totient is φ = 141998808632.

The previous prime is 213000021083. The next prime is 213000021161. The reversal of 213000021111 is 111120000312.

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

It is a cyclic number.

It is not a de Polignac number, because 213000021111 - 2¹⁸ = 212999758967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213000021161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260680 + ... + 702818.

It is an arithmetic number, because the mean of its divisors is an integer number (35500304880).

Almost surely, 2^213000021111 is an apocalyptic number.

213000021111 is a deficient number, since it is larger than the sum of its proper divisors (71002417929).

213000021111 is a wasteful number, since it uses less digits than its factorization.

213000021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602725.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 213000021111 its reverse (111120000312), we get a palindrome (324120021423).

The spelling of 213000021111 in words is "two hundred thirteen billion, twenty-one thousand, one hundred eleven".