211112101201111 has 64 divisors (see below), whose sum is σ = 256044686376960. Its totient is φ = 171803441664000.

The previous prime is 211112101201103. The next prime is 211112101201117. The reversal of 211112101201111 is 111102101211112.

It is a cyclic number.

It is not a de Polignac number, because 211112101201111 - 2³ = 211112101201103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112101201117) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 452042755 + ... + 452509531.

It is an arithmetic number, because the mean of its divisors is an integer number (4000698224640).

Almost surely, 2^{211112101201111} is an apocalyptic number.

211112101201111 is a deficient number, since it is larger than the sum of its proper divisors (44932585175849).

211112101201111 is a wasteful number, since it uses less digits than its factorization.

211112101201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468176.

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

Adding to 211112101201111 its reverse (111102101211112), we get a palindrome (322214202412223).

The spelling of 211112101201111 in words is "two hundred eleven trillion, one hundred twelve billion, one hundred one million, two hundred one thousand, one hundred eleven".