211242330111 has 8 divisors (see below), whose sum is σ = 281689528624. Its totient is φ = 140811675840.

The previous prime is 211242330029. The next prime is 211242330137. The reversal of 211242330111 is 111033242112.

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

It is a de Polignac number, because none of the positive numbers 2^k-211242330111 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 (211246330111) 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, 4106236 + ... + 4157361.

It is an arithmetic number, because the mean of its divisors is an integer number (35211191078).

Almost surely, 2^211242330111 is an apocalyptic number.

211242330111 is a deficient number, since it is larger than the sum of its proper divisors (70447198513).

211242330111 is an equidigital number, since it uses as much as digits as its factorization.

211242330111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8272121.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 211242330111 its reverse (111033242112), we get a palindrome (322275572223).

The spelling of 211242330111 in words is "two hundred eleven billion, two hundred forty-two million, three hundred thirty thousand, one hundred eleven".