211112220101111 has 8 divisors (see below), whose sum is σ = 241271361947040. Its totient is φ = 180953141570208.

The previous prime is 211112220101077. The next prime is 211112220101129. The reversal of 211112220101111 is 111101022211112.

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-211112220101111 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 211112220101111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112220107111) 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, 8454776 + ... + 22219533.

It is an arithmetic number, because the mean of its divisors is an integer number (30158920243380).

Almost surely, 2^{211112220101111} is an apocalyptic number.

211112220101111 is a deficient number, since it is larger than the sum of its proper divisors (30159141845929).

211112220101111 is an equidigital number, since it uses as much as digits as its factorization.

211112220101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31657513.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211112220101111 its reverse (111101022211112), we get a palindrome (322213242312223).

The spelling of 211112220101111 in words is "two hundred eleven trillion, one hundred twelve billion, two hundred twenty million, one hundred one thousand, one hundred eleven".