211312111201 has 4 divisors (see below), whose sum is σ = 211314140100. Its totient is φ = 211310082304.

The previous prime is 211312111163. The next prime is 211312111237. The reversal of 211312111201 is 102111213112.

It is a happy number.

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 130482778176 + 80829333025 = 361224^2 + 284305^2 .

It is a cyclic number.

It is not a de Polignac number, because 211312111201 - 2⁹ = 211312110689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211318111201) 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, 849256 + ... + 1069513.

It is an arithmetic number, because the mean of its divisors is an integer number (52828535025).

Almost surely, 2^211312111201 is an apocalyptic number.

It is an amenable number.

211312111201 is a deficient number, since it is larger than the sum of its proper divisors (2028899).

211312111201 is a wasteful number, since it uses less digits than its factorization.

211312111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028898.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 211312111201 its reverse (102111213112), we get a palindrome (313423324313).

The spelling of 211312111201 in words is "two hundred eleven billion, three hundred twelve million, one hundred eleven thousand, two hundred one".