211112111201 has 4 divisors (see below), whose sum is σ = 211302474900. Its totient is φ = 210921747504.

The previous prime is 211112111191. The next prime is 211112111219. The reversal of 211112111201 is 102111211112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104588206801 + 106523904400 = 323401^2 + 326380^2 .

It is a cyclic number.

It is not a de Polignac number, because 211112111201 - 2²² = 211107916897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211112111251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95180186 + ... + 95182403.

It is an arithmetic number, because the mean of its divisors is an integer number (52825618725).

Almost surely, 2^211112111201 is an apocalyptic number.

It is an amenable number.

211112111201 is a deficient number, since it is larger than the sum of its proper divisors (190363699).

211112111201 is a wasteful number, since it uses less digits than its factorization.

211112111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190363698.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211112111201 its reverse (102111211112), we get a palindrome (313223322313).

It can be divided in two parts, 21111 and 2111201, that added together give a palindrome (2132312).

The spelling of 211112111201 in words is "two hundred eleven billion, one hundred twelve million, one hundred eleven thousand, two hundred one".