11211112201111 has 8 divisors (see below), whose sum is σ = 11572828789248. Its totient is φ = 10849399851000.

The previous prime is 11211112201109. The next prime is 11211112201127. The reversal of 11211112201111 is 11110221111211.

11211112201111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11211112201111 - 2¹ = 11211112201109 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 (11211112201181) 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, 4837656 + ... + 6769426.

It is an arithmetic number, because the mean of its divisors is an integer number (1446603598656).

Almost surely, 2^{11211112201111} is an apocalyptic number.

11211112201111 is a deficient number, since it is larger than the sum of its proper divisors (361716588137).

11211112201111 is a wasteful number, since it uses less digits than its factorization.

11211112201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119013.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11211112201111 its reverse (11110221111211), we get a palindrome (22321333312322).

The spelling of 11211112201111 in words is "eleven trillion, two hundred eleven billion, one hundred twelve million, two hundred one thousand, one hundred eleven".