211021021111103 has 24 divisors (see below), whose sum is σ = 247078810847232. Its totient is φ = 179693439165744.

The previous prime is 211021021111099. The next prime is 211021021111139. The reversal of 211021021111103 is 301111120120112.

It is not a de Polignac number, because 211021021111103 - 2² = 211021021111099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021021111193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7844726 + ... + 21990492.

It is an arithmetic number, because the mean of its divisors is an integer number (10294950451968).

Almost surely, 2^{211021021111103} is an apocalyptic number.

211021021111103 is a deficient number, since it is larger than the sum of its proper divisors (36057789736129).

211021021111103 is a wasteful number, since it uses less digits than its factorization.

211021021111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14147771 (or 14147764 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 211021021111103 its reverse (301111120120112), we get a palindrome (512132141231215).

Subtracting 211021021111103 from its reverse (301111120120112), we obtain a palindrome (90090099009009).

The spelling of 211021021111103 in words is "two hundred eleven trillion, twenty-one billion, twenty-one million, one hundred eleven thousand, one hundred three".