213124444111 has 8 divisors (see below), whose sum is σ = 215683977600. Its totient is φ = 210573722400.

The previous prime is 213124444097. The next prime is 213124444129. The reversal of 213124444111 is 111444421312.

It is a happy number.

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 213124444111 - 2³³ = 204534509519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213124444111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213124454111) 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, 2154276 + ... + 2251033.

It is an arithmetic number, because the mean of its divisors is an integer number (26960497200).

Almost surely, 2^213124444111 is an apocalyptic number.

213124444111 is a deficient number, since it is larger than the sum of its proper divisors (2559533489).

213124444111 is a wasteful number, since it uses less digits than its factorization.

213124444111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405889.

The product of its digits is 3072, while the sum is 28.

Adding to 213124444111 its reverse (111444421312), we get a palindrome (324568865423).

The spelling of 213124444111 in words is "two hundred thirteen billion, one hundred twenty-four million, four hundred forty-four thousand, one hundred eleven".