211112112001 has 8 divisors (see below), whose sum is σ = 246194883200. Its totient is φ = 180953238564.

The previous prime is 211112111989. The next prime is 211112112011. The reversal of 211112112001 is 100211211112.

It is a happy number.

It is not a de Polignac number, because 211112112001 - 2⁹ = 211112111489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211112112011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307743261 + ... + 307743946.

It is an arithmetic number, because the mean of its divisors is an integer number (30774360400).

Almost surely, 2^211112112001 is an apocalyptic number.

It is an amenable number.

211112112001 is a deficient number, since it is larger than the sum of its proper divisors (35082771199).

211112112001 is an frugal number, since it uses more digits than its factorization.

211112112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615487228 (or 615487214 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211112112001 its reverse (100211211112), we get a palindrome (311323323113).

The spelling of 211112112001 in words is "two hundred eleven billion, one hundred twelve million, one hundred twelve thousand, one".