213113312111 has 8 divisors (see below), whose sum is σ = 257885016480. Its totient is φ = 171923344128.

The previous prime is 213113312099. The next prime is 213113312221. The reversal of 213113312111 is 111213311312.

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 213113312111 - 2¹⁸ = 213113049967 is a prime.

It is a super-3 number, since 3×213113312111³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113311111) 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, 895433966 + ... + 895434203.

It is an arithmetic number, because the mean of its divisors is an integer number (32235627060).

Almost surely, 2^213113312111 is an apocalyptic number.

213113312111 is a deficient number, since it is larger than the sum of its proper divisors (44771704369).

213113312111 is a wasteful number, since it uses less digits than its factorization.

213113312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790868193.

The product of its digits is 108, while the sum is 20.

Adding to 213113312111 its reverse (111213311312), we get a palindrome (324326623423).

The spelling of 213113312111 in words is "two hundred thirteen billion, one hundred thirteen million, three hundred twelve thousand, one hundred eleven".