211200111112021 has 4 divisors (see below), whose sum is σ = 211213633127200. Its totient is φ = 211186589096844.

The previous prime is 211200111112019. The next prime is 211200111112171. The reversal of 211200111112021 is 120211111002112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211200111112021 - 2¹ = 211200111112019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211200111111986 and 211200111112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200111112721) 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, 6760984161 + ... + 6761015398.

It is an arithmetic number, because the mean of its divisors is an integer number (52803408281800).

Almost surely, 2^{211200111112021} is an apocalyptic number.

It is an amenable number.

211200111112021 is a deficient number, since it is larger than the sum of its proper divisors (13522015179).

211200111112021 is a wasteful number, since it uses less digits than its factorization.

211200111112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13522015178.

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

Adding to 211200111112021 its reverse (120211111002112), we get a palindrome (331411222114133).

The spelling of 211200111112021 in words is "two hundred eleven trillion, two hundred billion, one hundred eleven million, one hundred twelve thousand, twenty-one".