211143330111 has 8 divisors (see below), whose sum is σ = 321742217344. Its totient is φ = 120653331480.

The previous prime is 211143330109. The next prime is 211143330133. The reversal of 211143330111 is 111033341112.

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

It is not a de Polignac number, because 211143330111 - 2¹ = 211143330109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10054444291 = 211143330111 / (2 + 1 + 1 + 1 + 4 + 3 + 3 + 3 + 0 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211143130111) 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, 5027222125 + ... + 5027222166.

It is an arithmetic number, because the mean of its divisors is an integer number (40217777168).

Almost surely, 2^211143330111 is an apocalyptic number.

211143330111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211143330111 is a deficient number, since it is larger than the sum of its proper divisors (110598887233).

211143330111 is a wasteful number, since it uses less digits than its factorization.

211143330111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10054444301.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 211143330111 its reverse (111033341112), we get a palindrome (322176671223).

The spelling of 211143330111 in words is "two hundred eleven billion, one hundred forty-three million, three hundred thirty thousand, one hundred eleven".