211311112112203 has 4 divisors (see below), whose sum is σ = 211311142217560. Its totient is φ = 211311082006848.

The previous prime is 211311112112189. The next prime is 211311112112207. The reversal of 211311112112203 is 302211211113112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211311112112203 is a prime.

It is a super-2 number, since 2×211311112112203² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211311112112207) 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, 1664428 + ... + 20625046.

It is an arithmetic number, because the mean of its divisors is an integer number (52827785554390).

Almost surely, 2^{211311112112203} is an apocalyptic number.

211311112112203 is a deficient number, since it is larger than the sum of its proper divisors (30105357).

211311112112203 is a wasteful number, since it uses less digits than its factorization.

211311112112203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30105356.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 211311112112203 its reverse (302211211113112), we get a palindrome (513522323225315).

Subtracting 211311112112203 from its reverse (302211211113112), we obtain a palindrome (90900099000909).

The spelling of 211311112112203 in words is "two hundred eleven trillion, three hundred eleven billion, one hundred twelve million, one hundred twelve thousand, two hundred three".